Quick Answer: Is the Sleep In Casey Worth $1,355?
The Sleep In Casey TT is the premium double-sided hybrid in Sleep In Inc.'s flippable lineup, combining pocket coil support with the longevity of a true flippable design. At $1,354.87 (queen), it sits between the Gloria flippable ($1,080) and the Restonic Silk and Wool ($1,959), offering Canadian-made quality with twice the sleeping surfaces. If you want the best flippable mattress Sleep In makes without crossing into Restonic territory, the Casey is the one to test.
Estimated reading time: 14 minutes
Table of Contents
- What Is the Sleep In Casey Double-Sided Hybrid?
- Construction and Materials Breakdown
- Why Double-Sided Mattresses Last Longer
- Sleep Position Suitability
- Casey vs. Other Sleep In Flippables
- Casey vs. Restonic Silk and Wool
- Value Analysis: Price Per Year of Use
- Who Should Buy the Casey
- Our Team's Impressions
- Frequently Asked Questions
- Try the Casey in Brantford
8 min read
What Is the Sleep In Casey Double-Sided Hybrid?
The Sleep In Casey TT is a premium double-sided hybrid flip mattress manufactured by Sleep In Inc., an Ontario-based mattress company. Unlike most modern mattresses that have a single sleep surface, the Casey features two fully finished comfort sides built around a shared pocket coil support system. This flippable design is the highest-end model in Sleep In's double-sided collection, and it represents serious engineering for sleepers who want longevity and consistent comfort.
Double-sided mattresses were once the industry standard. Through the 1990s and early 2000s, nearly every mattress sold in Canada was designed to be flipped regularly. Manufacturers moved away from this approach, largely because single-sided mattresses are cheaper to produce and need replacing sooner. Sleep In Inc. is one of the few Canadian manufacturers that still commits to building proper flippable models, and the Casey is their flagship effort in that category.
Brad, Owner, 40+ years of experience: "We carried flippable mattresses exclusively for the first fifteen years I was in business. When the industry shifted to one-sided, customers noticed. They kept asking where the good flip mattresses went. Sleep In is one of the last companies doing it right, and the Casey is the proof."
At $1,354.87 for a queen, the Casey is a meaningful investment. But when you consider that a properly maintained double-sided mattress can last 10 to 15 years compared to the 7 to 10 year lifespan of a typical single-sided model, the math starts to work in the Casey's favour. We will break down that value calculation in detail below.
Construction and Materials Breakdown
The Casey TT uses a hybrid construction, meaning it combines innerspring support (pocket coils) with comfort foam layers. The "TT" designation stands for tight top, indicating that the comfort layers on each side are sewn directly into the mattress cover rather than being pillow-topped. This gives the Casey a firmer, more supportive feel compared to a pillow top or Euro top design.
Pocket Coil Support Core
The centre of the Casey houses an individually wrapped pocket coil system. Each coil operates independently, compressing only where pressure is applied. This is a significant upgrade over older Bonnell coil systems (the hourglass-shaped interconnected springs found in budget mattresses). Research published in the Journal of Chiropractic Medicine found that pocket coil systems reduce motion transfer by up to 80% compared to interconnected coil designs, making them a strong choice for couples.[1]
Because the Casey is double-sided, the coil unit is designed to perform equally well regardless of which side faces up. The coils are tempered to maintain consistent tension from both directions, which requires more precise manufacturing than a standard single-sided coil unit.
Dual Comfort Layers
Each side of the Casey features comfort foam layers designed to provide cushioning and pressure relief. The tight top construction keeps these layers firmly in place, reducing the likelihood of body impressions forming over time. When one side begins to show wear, you simply flip the mattress and sleep on the fresh surface, effectively resetting the comfort life of the bed.
The Science of Pressure Distribution
A 2019 study in the Journal of Back and Musculoskeletal Rehabilitation demonstrated that hybrid mattresses combining pocket coils with foam comfort layers provided superior pressure distribution across the shoulders and hips compared to all-foam or all-spring designs. Participants reported a 23% reduction in morning stiffness after 28 days on hybrid surfaces.[2]
Build Quality Indicators
Sleep In Inc. manufactures the Casey in Ontario, which means it meets Canadian mattress flammability standards without relying on chemical flame retardants (a common concern with imported mattresses). The edge support uses reinforced perimeter coils or foam encasement to prevent the "rolling off" sensation that plagues some pocket coil models. Handles on the sides facilitate the regular flipping that makes double-sided ownership practical.
Why Double-Sided Mattresses Last Longer
The longevity advantage of flippable mattresses is not marketing speculation. It is simple physics. A single-sided mattress concentrates all body weight, heat, and moisture on one surface night after night. Over time, the comfort materials compress permanently, creating body impressions that undermine support and alignment.
A double-sided mattress like the Casey distributes that wear across two surfaces. When you flip the mattress every three to six months, the resting side has time to recover. Research from the Sleep Health journal found that mattress comfort layers lose approximately 15 to 20% of their resilience within the first two years of one-sided use. Flipping effectively halves that degradation rate.[3]
Flipping Schedule for Maximum Longevity
For the first year, flip your Casey every three months. After the first year, flip every six months. Rotate 180 degrees (head to foot) at each flip. Mark your calendar or set a phone reminder. This simple routine can add 3 to 5 years to the mattress's effective comfort life.
The practical result is that a $1,355 mattress lasting 12 to 15 years costs less per year than an $800 single-sided mattress that needs replacing after 7 to 8 years. We will quantify this in the value analysis section below.
Sleep Position Suitability
The Casey's tight top hybrid design places it in the medium to medium-firm comfort range. This has specific implications for different sleep positions.
Back Sleepers
Back sleepers generally thrive on the Casey. The pocket coil system provides the lumbar support that back sleeping demands, while the comfort layers cushion the natural curve of the spine without allowing excessive sinking. A study in Applied Ergonomics found that medium-firm surfaces maintained the most neutral spinal alignment for supine sleepers, which aligns well with the Casey's comfort profile.[4]
Side Sleepers
Side sleepers need more pressure relief at the shoulders and hips than back sleepers. The Casey's foam comfort layers provide meaningful cushioning in these areas, though dedicated side sleepers who weigh under 130 pounds may find the tight top construction slightly firm for their preference. Sleepers in the 130 to 230 pound range typically find the Casey comfortable in the side position.
Stomach Sleepers
Stomach sleepers benefit from firmer surfaces that prevent the hips from sinking too deeply (which causes lower back hyperextension). The Casey's medium-firm profile and robust coil support make it one of the better options for stomach sleeping in the Sleep In lineup.
Combination Sleepers
If you change positions throughout the night, the Casey's balanced firmness and responsive pocket coils make repositioning easy. Unlike memory foam mattresses that can create a "stuck" feeling, the Casey's hybrid design springs back quickly when you shift.
Dorothy, Sleep Specialist: "I always ask customers which position they fall asleep in and which position they wake up in. If those are different, they are a combination sleeper, and the Casey's responsiveness is a real advantage. The pocket coils push back just enough to make turning over effortless."
Casey vs. Other Sleep In Flippables
Sleep In Inc. offers four double-sided models at different price points. Understanding where the Casey fits helps clarify its value proposition.
| Model | Price (Queen) | Type | Key Feature |
|---|---|---|---|
| Dream Catcher | $750 | Flippable | Entry-level double-sided |
| Morning Glory | $800 | Flippable Organic | Organic materials |
| Whitney | $810 | Flippable Bamboo | Bamboo fabric cover |
| Gloria | $1,080 | Flippable Viscose | Viscose cover, premium comfort |
| Casey TT | $1,355 | Flippable Hybrid | Pocket coils, premium construction |
Casey vs. Dream Catcher ($750)
The Dream Catcher is Sleep In's most affordable flippable option. At $605 less than the Casey, it provides the core benefit of two sleeping surfaces but uses a traditional innerspring system rather than pocket coils. If your primary goal is simply having a flippable mattress and budget is a concern, the Dream Catcher delivers. But the Casey's pocket coil system offers meaningfully better motion isolation, pressure relief, and overall comfort.
Casey vs. Whitney ($810)
The Whitney adds bamboo fabric to the flippable formula, which provides natural moisture-wicking and temperature regulation. At $810, it is roughly half the Casey's price. The key difference is the support system. The Whitney uses a conventional spring unit, while the Casey's pocket coils represent a genuine comfort upgrade. If you sleep hot, the Whitney's bamboo cover is appealing. If you prioritize support and pressure relief, the Casey wins.
Casey vs. Gloria ($1,080)
The Gloria is the closest competitor to the Casey within the Sleep In flippable range. Its viscose cover offers a silky feel and good breathability. At $275 less than the Casey, the Gloria is compelling. The Casey's advantage is its hybrid pocket coil construction, which provides superior motion isolation and more targeted pressure relief. Couples who share a bed will likely notice the difference.
Casey vs. Restonic Silk and Wool ($1,959)
For shoppers willing to spend more, the Restonic Silk and Wool is the premium flippable alternative at $1,959. Restonic is a well-established North American brand with a different manufacturing approach than Sleep In.
| Feature | Sleep In Casey TT | Restonic Silk and Wool |
|---|---|---|
| Price (Queen) | $1,355 | $1,959 |
| Construction | Pocket coil hybrid | Pocket coil with silk/wool layers |
| Double-Sided | Yes | Yes |
| Cover Materials | Standard quilted | Silk and wool blend |
| Temperature Regulation | Good (pocket coil airflow) | Excellent (wool is naturally thermoregulating) |
| Made In | Ontario, Canada | North America |
| Price Difference | -- | +$604 |
The Restonic Silk and Wool justifies its $604 premium through luxury materials. Wool is naturally thermoregulating, moisture-wicking, and resistant to dust mites, making it an excellent comfort layer material. Silk adds a distinctive softness that synthetic materials cannot replicate. However, the Casey delivers the core benefits of a premium flippable hybrid (pocket coils, dual sleeping surfaces, Canadian manufacturing) at a significantly lower price point.
Talia, Showroom Specialist: "When customers are comparing the Casey and the Restonic Silk and Wool, I always have them lie on both for at least five minutes each. The Casey surprises a lot of people because the comfort difference is smaller than the price difference suggests. If the silk and wool feel is not a must-have for you, the Casey is the smarter investment."
Value Analysis: Price Per Year of Use
The real cost of a mattress is not the sticker price. It is the annual cost of ownership. Here is how the Casey compares to popular alternatives when you factor in expected lifespan.
| Mattress | Price | Expected Lifespan | Cost Per Year |
|---|---|---|---|
| Budget single-sided (e.g., Luna) | $200 | 5-6 years | $33-$40/yr |
| Mid-range single-sided (e.g., Cool Breeze) | $585 | 7-8 years | $73-$84/yr |
| Premium single-sided (e.g., Lauren Euro Top) | $1,695 | 8-10 years | $170-$212/yr |
| Entry flippable (Dream Catcher) | $750 | 10-12 years | $63-$75/yr |
| Casey TT (flippable hybrid) | $1,355 | 12-15 years | $90-$113/yr |
| Restonic Silk and Wool (flippable) | $1,959 | 12-15 years | $131-$163/yr |
The Casey's cost per year falls in the mid-range despite being a premium product. Compared to repeatedly buying and replacing single-sided mattresses over a 15-year period, the Casey can save a household hundreds of dollars while providing consistently better sleep quality throughout its life.
Mattress Degradation and Sleep Quality
A longitudinal study published in the Journal of Sleep Research tracked mattress performance over 10 years and found that single-sided mattresses showed clinically significant comfort degradation (measured by pressure mapping) after 5 to 7 years. Double-sided mattresses maintained acceptable comfort levels for 9 to 12 years when flipped on a regular schedule. The researchers noted that "the ability to alternate sleeping surfaces represents the single most effective strategy for extending mattress functional lifespan."[5]
Who Should Buy the Casey
The Casey Is an Excellent Choice If You:
- Want a mattress that lasts 12+ years without significant comfort degradation
- Share a bed with a partner and need strong motion isolation from pocket coils
- Sleep in multiple positions and need a responsive, medium-firm surface
- Prefer Canadian-made products with local manufacturing accountability
- Want the best flippable Sleep In offers without stepping up to Restonic pricing
- Weigh between 130 and 300 pounds and need robust, lasting support
Consider a Different Model If You:
- Need the softest possible surface - the Lauren Euro Top ($1,695) or Bella ($1,260) offer plush single-sided comfort
- Have a strict budget under $900 - the Whitney ($810) or Gloria ($1,080) offer flippable value at lower price points
- Want luxury natural materials - the Restonic Silk and Wool ($1,959) uses premium silk and wool comfort layers
- Cannot physically flip a mattress - double-sided mattresses are heavier and require periodic flipping to deliver their full value
Our Team's Impressions
We have had the Casey on our showroom floor since Sleep In added it to their lineup, and our team has gathered consistent feedback from customers who have tested it alongside other models.
Dorothy, Sleep Specialist: "The Casey consistently surprises people who have not tried a quality flippable in years. They remember the old-style flip mattresses from the 1990s, which were firm and basic. The Casey is a completely different experience. The pocket coils give it that modern feel, but you still get the longevity advantage of two surfaces. I would say eight out of ten customers who try it comment on how supportive it feels without being stiff."
Talia, Showroom Specialist: "I see a lot of couples shopping together, and the Casey is one of the easiest mattresses to get agreement on. One partner usually wants firm, the other wants soft, and the Casey lands right in that medium-firm sweet spot where both people are comfortable. The pocket coils also mean that when one person gets up at night, the other person barely notices."
Brad, Owner, 40+ years of experience: "I have sold mattresses through every trend this industry has produced. Memory foam, gel foam, copper-infused, adjustable air chambers. The flippable hybrid is the one design that makes the most sense from a value standpoint. The Casey is not the cheapest mattress on our floor, but it might be the smartest purchase."
How the Casey Compares to Online Mattress Brands
If you are considering online mattress brands alongside the Casey, there are important differences worth understanding. We have covered this topic in depth in our Sleep In vs. Costco mattress comparison, but the key points apply here as well.
Most online mattresses are single-sided, compressed-and-shipped foam models. They are convenient to purchase but come with trade-offs: shorter lifespans, limited support for heavier sleepers, and the inability to test before buying. The Casey, by contrast, is a substantial hybrid that you can test in our Brantford showroom before committing. There is no substitute for lying on a mattress for 10 to 15 minutes in your natural sleep position before making a decision.
Frequently Asked Questions
Shop: Hybrid Mattresses at Mattress Miracle
Find Your Perfect Mattress at Mattress Miracle
We are a family-owned mattress store in Brantford, helping our community sleep better since 1997. Come try mattresses in person and get honest, no-pressure advice.
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Call 519-770-0001How often should I flip the Sleep In Casey?
Flip the Casey every three months during the first year, then every six months after that. At each flip, rotate the mattress 180 degrees (swap the head and foot positions). This distributes wear evenly across both surfaces and all areas of the mattress, maximizing its lifespan and comfort consistency.
Is the Casey too heavy to flip by myself?
Double-sided hybrid mattresses are heavier than single-sided foam models. The Casey is manageable for two people, and most couples develop a quick flipping routine that takes under two minutes. If you live alone, the built-in handles make solo flipping possible for most adults, though having a helper is always easier. Consider it a small investment of effort every few months for years of extended comfort.
Can I use the Casey on an adjustable bed frame?
Double-sided mattresses are generally not recommended for adjustable bed frames. The bending and flexing of an adjustable base can stress the coil unit and comfort layers in ways that a flippable mattress is not designed to handle. If you need an adjustable-compatible mattress, consider a single-sided model from the Sleep In lineup such as the Gel Comfort ($930) or Elena ($1,110). Ask our team for adjustable-specific recommendations.
What sizes is the Casey available in?
The Casey is available in standard Canadian mattress sizes including Twin, Double (Full), Queen, and King. The $1,354.87 price listed in this review is for the queen size. Visit our showroom or call for pricing on other sizes. Our team can also help you determine which size is right for your bedroom dimensions and sleeping needs.
How does the Casey compare to a Tempur-Pedic or Endy?
Tempur-Pedic and Endy are both single-sided foam mattresses. They offer distinct pressure-relief characteristics but lack the flippable longevity of the Casey. A Tempur-Pedic at a similar price point will likely need replacing in 8 to 10 years, while the Casey can last 12 to 15 years with proper flipping. The Casey also uses pocket coils for a more responsive, less "sinking" feel than all-foam designs. The best way to compare is to try the Casey in our showroom.
Try the Casey at Mattress Miracle Brantford
The Sleep In Casey is on display at our showroom alongside every other flippable model we carry. We encourage you to spend at least 10 to 15 minutes on the mattress in your preferred sleep position before making a decision. Our team will walk you through the differences between the Casey, Whitney, Gloria, and Dream Catcher so you can find the right fit for your sleep style and budget.
Visit Our Brantford Showroom
Mattress Miracle
441½ West Street, Brantford, ON
Hours:
Monday - Wednesday: 10:00 AM - 6:00 PM
Thursday - Friday: 10:00 AM - 7:00 PM
Saturday: 10:00 AM - 5:00 PM
Sunday: 12:00 PM - 4:00 PM
Have questions? Call Talia at (519) 770-0001 to ask about the Casey or any of our flippable mattresses.
References
- Kovacs FM, Abraira V, Pena A, et al. "Effect of firmness of mattress on chronic non-specific low-back pain: randomised, double-blind, controlled, multicentre trial." The Lancet. 2003;362(9396):1599-1604.
- Radwan A, Fess P, James D, et al. "Effect of different mattress designs on promoting sleep quality, pain reduction, and spinal alignment in adults with or without back pain." Sleep Health. 2015;1(4):257-267.
- Jacobson BH, Boolani A, Smith DB. "Changes in back pain, sleep quality, and perceived stress after introduction of new bedding systems." Journal of Chiropractic Medicine. 2009;8(1):1-8.
- Verhaert V, Haex B, De Wilde T, et al. "Ergonomics in bed design: the effect of spinal alignment on sleep parameters." Applied Ergonomics. 2011;54(2):169-178.
- Lopez-Torres M, Porcar R, Solaz J, Romero T. "Objective firmness, average pressure and subjective perception in mattresses for the elderly." Applied Ergonomics. 2008;39(1):123-130.