Sources
- Jacobson, B. H. et al. (2008). "Grouped comparisons of sleep quality for new and personal bedding systems." Applied Ergonomics, 39(2), 247-254. PubMed 17662962.
- Radwan, A. et al. (2015). "Effect of different mattress designs on promoting sleep quality, pain reduction, and spinal alignment." Sleep Health, 1(4), 257-267. PubMed 29073401.
- Kovacs, F. M. et al. (2003). "Effect of firmness of mattress on chronic non-specific low-back pain." The Lancet, 362(9396), 1599-1604. PubMed 14630439.
Quick Answer: Costco Canada carries single (twin) mattresses in limited models, typically foam-based options at competitive price points. Their selection varies by season. If you need a single mattress now, want to compare more than two or three models, or prefer to try before buying, local mattress retailers like Mattress Miracle in Brantford carry consistent stock with same-day pickup available.
In This Guide
Reading Time: 5 minutes
Single mattresses are bought most often for children's bedrooms, bunk beds, guest rooms, and daybeds. The buying criteria differ depending on who will be sleeping on them and how frequently. This guide covers what to look for regardless of where you buy, so you can evaluate any mattress, including Costco's offerings, against the same standard.
Single Mattress Size and Uses
| Name | Dimensions | Common Use |
|---|---|---|
| Single / Twin | 99 x 191 cm (39 x 75 in) | Children, bunk beds, single adults, guest rooms |
| Twin XL | 99 x 203 cm (39 x 80 in) | Taller adults, college dorms |
| Single / Twin in Canada | Same as above | "Single" and "twin" are interchangeable in Canada |
In Canada, "single" and "twin" refer to the same mattress size. If you are ordering a mattress described as a "twin" in a US context, it will fit your single bed frame without modification.
Who Needs a Single Mattress
| User | Key Priority | Recommended Construction |
|---|---|---|
| Child (4 to 12 years) | Safe, medium-firm, low off-gassing | Certified foam, pocketed coil |
| Teen (13 to 17 years) | Growing spine support, durability | Medium-firm pocketed coil or quality foam |
| Single adult (under 70 kg) | Comfort, pressure relief | Memory foam or pocketed coil |
| Guest room (occasional use) | Durability over comfort priority | Mid-range foam, innerspring |
| Bunk bed upper bunk | Thickness safety requirement | 15 to 20 cm max, any type |
Children and Mattress Firmness: Research on paediatric sleep ergonomics recommends medium-firm mattresses for children between ages 4 and 12. Children's lower body weight means even a medium-firm mattress provides adequate cushioning while supporting the developing lumbar curve. Soft mattresses can allow excessive spinal flexion in children who sleep in the foetal position.
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What to Check Before Buying
Single mattress quality indicators to verify regardless of retailer:
- Height: A single at 20 to 25 cm fits most standard single bed frames well. Under 15 cm is typically insufficient for adult use.
- Foam certification: For children particularly, look for CertiPUR-US or OEKO-TEX certification to ensure the foam does not contain harmful chemicals.
- Coil count (if innerspring): A twin/single innerspring should have at least 300 individually wrapped coils for adequate support.
- Warranty: Minimum 5 years, preferably 10, for a mattress that will see years of nightly use.
- Removable cover: Children's mattresses are frequently soiled. A removable, machine-washable cover is a practical necessity.
Choosing a Single for a Child
For Brantford Families: When outfitting a child's bedroom, bring your child's height and approximate weight when you visit Mattress Miracle. This helps our staff match the right firmness level. A child near the top of a bunk bed also needs a mattress that fits the guardrail safety requirements, which we can help you measure and match in person. We carry children's mattress options at our Brantford showroom.
- Choose medium-firm over soft for children under 12 to support spine development.
- Avoid latex for children with latex allergies (ask about alternatives).
- If the mattress will be used as a bunk bed upper bunk, confirm the maximum safe thickness for your specific guardrail height before purchasing.
- A waterproof mattress protector is essential for young children and should be purchased alongside the mattress.
Shop: Browse All Mattresses
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.
441 1/2 West Street, Brantford, Ontario
Call 519-770-0001Frequently Asked Questions
Does Costco sell single mattresses in Canada?
Costco Canada carries twin (single) mattresses in limited models depending on current inventory. Their selection varies seasonally and by location. Online ordering is available but delivery timelines vary.
What is the size of a single mattress in Canada?
A single mattress in Canada measures 99 x 191 cm (39 x 75 inches), the same as a twin. This is the standard size for children's beds, bunk beds, daybeds, and guest rooms.
How much does a single mattress cost at Costco Canada?
Costco Canada single mattress prices typically range from $250 to $800 depending on the brand and construction. Their Novaform foam models are among the better-value options at this size. Prices vary by season and promotion.
What should I look for in a single mattress for a child?
For a child's single mattress, look for medium-firm support appropriate for developing spines, CertiPUR-US certified foam (low chemical off-gassing), a mattress height of 20 to 25 cm for comfortable bed height with a standard frame, and a removable, washable cover.
Sources
- Health Canada, "Children's Bedroom Safety," canada.ca, 2024
- CertiPUR-US, "Certified Foam Program," certipurus.com, 2025
- Paediatric Sleep Council, "Mattress Firmness for Children," 2024
Visit Our Brantford Showroom
Mattress Miracle carries single and twin mattresses in multiple firmness options for children, teens, and adults. We also carry mattress protectors appropriate for children's beds. Come in with your specific setup and we will help you find the right fit.
Mattress Miracle , 441½ West Street, Brantford, ON , (519) 770-0001
Hours: Monday to Wednesday 10am to 6pm, Thursday to Friday 10am to 7pm, Saturday 10am to 5pm, Sunday 12pm to 4pm.
Family-owned since 1997. We know what families need.
Brad, Owner, 40+ years of experience: "Every customer's situation is different. We have been helping Brantford families find the right mattress for over 37 years, and we are always happy to answer questions in person at our showroom on West Street."
Shop This Topic at Mattress Miracle
Popular picks at Mattress Miracle:
- Restonic ComfortCare Dalton & Albany pocket-coil mattress
- Whitney bamboo mattress
- Somnia posture pillow
Or shop our mattress collection in our Brantford showroom.