Quick Answer: The best mattress for kids with growing pains is typically a medium-firm model supporting a developing spine while cushioning legs. The Pediatric Orthopaedic Society of North America calls growing pains the most common musculoskeletal pain in early childhood, though the cause is unclear. Reassurance and gentle massage often help.
In This Guide
Reading Time: 9 minutes
What Growing Pains Actually Are (and What They Are Not)
Growing pains are one of the most common reasons parents end up in a paediatrician's office. The medical term is benign nocturnal limb pain, and it affects between 25% and 40% of children between ages 3 and 12. The name is a bit misleading, though. Growing pains are not caused by actual bone growth.
The pain typically shows up in the evening or at night, often waking your child from sleep. It tends to be bilateral, meaning both legs hurt at the same time, usually in the shins, calves, thighs, or behind the knees. By morning, the pain is gone. No limping. No swelling. No redness. Just a tired kid and a tired parent.
What the Research Says
A 2007 study in Pediatric Rheumatology found that growing pains are the most common musculoskeletal complaint in childhood. The pain is real, but the cause remains debated. Current theories include muscle fatigue from daytime activity, lower pain thresholds, and reduced bone strength during rapid growth periods. What is clear: sleep disruption from the pain creates a cycle where fatigue increases pain sensitivity the following night.
If your child's pain is only in one leg, involves joint swelling, causes limping, or persists into the morning, see your paediatrician. Those are not growing pains.
Why the Right Mattress Matters for Growing Pains
Here is the connection most parents miss. A mattress that is too firm creates pressure points against your child's legs and hips. A mattress that is too soft lets the spine sag out of alignment, which stresses the muscles that are already fatigued from the day.
Growing pains concentrate in the lower limbs. The shins, calves, and thighs bear the brunt. When your child lies down on a mattress that does not contour to their body, those already-sore muscles are pressed against a rigid surface for hours. That is not recovery. That is compression.
Brad, Owner, 40+ years of experience: "Parents come in looking for the firmest mattress they can find because they read somewhere that firm is better for kids. But firm and supportive are not the same thing. A medium-firm mattress with good pocket coils gives a child's body the support it needs while letting the sore spots sink in just enough to relieve pressure."
The right mattress does three things for a child with growing pains:
Three Things the Right Mattress Does
- Supports spinal alignment: Keeps the spine neutral so back and leg muscles are not compensating all night
- Relieves lower limb pressure: Allows the calves, shins, and thighs to rest without compression against the surface
- Reduces tossing and turning: Less motion transfer means fewer wake-ups when the pain flares
What to Look for in a Kids Mattress for Growing Pains
Not every kids mattress is built for this. Many are just smaller versions of budget adult mattresses with a cartoon cover. When your child is dealing with nocturnal limb pain, the mattress needs to do more than just exist.
Individually Wrapped Coils Over Foam Slabs
Foam mattresses push back uniformly. Pocket coil mattresses respond independently to each body part. When your child's sore calf presses into the mattress, only the coils under that calf compress. The rest of the mattress stays supportive. That independent response is what separates pressure relief from just being soft.
Our Restonic ComfortCare Twin has 690 individually wrapped coils. The Double has 980. For an older child in a Queen, that number jumps to 1,222. Every coil responds independently to where your child needs give and where they need support.
Temperature Regulation
Children run warm. All-foam mattresses trap heat, which can increase restlessness and make pain perception worse. Pocket coil mattresses allow air to circulate between the coils, keeping the sleep surface cooler. The Restonic Luxury Silk and Wool Queen uses natural fibres (silk and wool) in the comfort layers, which wick moisture and regulate temperature better than synthetic foams.
Edge Support
Kids sprawl. They migrate to the edge of the bed. They hang limbs off the side. Good edge support means the mattress performs consistently whether your child is in the centre or right at the perimeter. Reinforced edges also make getting in and out of bed easier, which matters when a child wakes up with leg pain and needs to get to you.
CertiPUR-US Certification
Children breathe faster than adults and are more sensitive to off-gassing. Every Restonic mattress we carry is CertiPUR-US certified, meaning the foams are tested for harmful chemicals, heavy metals, and volatile organic compounds. This is not a marketing badge. It is a materials safety standard.
Mattress Firmness by Age Group
Growing pains peak between ages 3 and 12, but the right firmness level changes as your child grows. A five-year-old weighing 40 pounds interacts with a mattress very differently than a twelve-year-old weighing 90 pounds.
| Age | Weight Range | Recommended Firmness | Why |
|---|---|---|---|
| 3-5 | 30-45 lbs | Medium-firm (6.5-7/10) | Light bodies need firmer support to prevent sinking. Developing spine needs neutral alignment. |
| 6-8 | 45-65 lbs | Medium-firm (6-6.5/10) | Peak growing pain years. Need enough give to relieve leg pressure without losing support. |
| 9-12 | 65-100 lbs | Medium (5.5-6/10) | Heavier bodies naturally compress more. Can tolerate slightly softer surfaces for deeper pressure relief. |
The Flip Test
Have your child lie on the mattress in their usual sleep position. Slide your hand under the small of their back. If there is a large gap, the mattress is too firm. If your hand cannot slide under at all, it is too soft. A slight resistance against your hand is the right amount of support.
Best Sleep Positions for Growing Pain Relief
The mattress is half the equation. How your child sleeps on it matters just as much. Growing pains respond to position because the affected muscles either tighten or relax depending on joint angles.
Side Sleeping with a Pillow Between the Knees
This is the position paediatric physiotherapists most often recommend. A pillow between the knees keeps the hips aligned and prevents the upper leg from pulling on the lower back and thigh muscles. On a pocket coil mattress, the shoulder and hip sink in while the waist stays supported.
Back Sleeping with a Pillow Under the Knees
Placing a small pillow under the knees takes tension off the calves and hamstrings. This is especially helpful during an active growing pain episode. The slight bend in the knee reduces the stretch on the posterior leg muscles where the pain concentrates.
Positions to Avoid
Stomach sleeping extends the spine and tightens the hip flexors, which can increase thigh pain. If your child is a natural stomach sleeper, a medium-firm mattress helps keep the pelvis from sinking too deep, but side or back sleeping is better during pain episodes.
Helping Your Child Sleep Through the Pain
A good mattress is the foundation, but growing pains often need a combination of approaches. Here is what works alongside the right sleep surface.
What Brantford Parents Tell Us
Many families in Brantford and the surrounding areas come to us after their child has been dealing with nighttime leg pain for weeks. The most common story: they have tried stretching, massage, and warm baths, but the child still wakes up at 2 a.m. with sore legs. The mattress is the one variable most parents have not considered. When we fit these families with a proper pocket coil mattress, the improvement in sleep quality is often noticeable within the first week.
Before Bed
Gentle stretching of the calves, hamstrings, and quadriceps for 5-10 minutes before bed can reduce the severity of episodes. A warm bath before stretching makes the muscles more pliable. Some paediatricians recommend a warm heat pack on the legs for 15-20 minutes before sleep.
During an Episode
Massage is the most effective immediate relief. Firm, gentle rubbing of the sore areas increases blood flow and relaxes the cramping muscles. If your child wakes up in pain, massage the calves and thighs for 5-10 minutes. Acetaminophen or ibuprofen can help for severe episodes, but check with your paediatrician for dosing and frequency.
The Mattress as Part of the Plan
Think of the mattress as the recovery platform. Your child spends 10-12 hours on it every night. If that surface is creating pressure instead of relieving it, everything else you do (stretching, massage, heat) is working against a baseline of discomfort. A mattress that contours to the legs and hips while supporting the spine gives those muscles the best environment to recover overnight.
Dorothy, Sleep Specialist: "We had a family come in from Paris, Ontario, whose eight-year-old was waking up almost every night with leg pain. They had been on a hand-me-down foam mattress. We put the child on a Restonic ComfortCare Double with 980 coils, and the mum called back two weeks later to say the wake-ups had dropped from five nights a week to one. The mattress did not cure the growing pains, but it stopped making them worse."
Our Recommendation for Growing Pains
For children dealing with growing pains, we recommend the Restonic ComfortCare. Here is why it works specifically for this condition:
Restonic ComfortCare for Growing Pains
- Twin (690 coils): Best for ages 3-7. Firm enough for lighter bodies, responsive enough to relieve leg pressure.
- Double (980 coils): Best for ages 7-12. More coils means more independent response for growing bodies that need both support and contouring.
- Queen (1,222 coils, $1,619): For older kids or shared rooms. The highest coil count provides the most precise pressure mapping.
- CertiPUR-US certified foams: Low VOC emissions for children's developing respiratory systems.
- Canadian-made: Built to Canadian quality standards.
For families who want a natural fibre option, the Restonic Luxury Silk and Wool uses 884 zoned coils with silk and wool comfort layers. The natural fibres wick moisture and regulate temperature, which helps children who run hot and wake up sweaty alongside the leg pain.
When to Replace Your Child's Mattress
Children outgrow mattresses faster than adults wear them out. A few signs it is time:
- Visible body impressions where your child sleeps
- Your child complains of being uncomfortable or wakes up stiff
- The mattress is more than 5-7 years old (kids mattresses see heavier proportional use)
- Your child has grown significantly since the mattress was purchased
- You can feel the coils or springs through the comfort layer
A worn-out mattress does not just lose comfort. It loses the ability to support a growing spine and relieve pressure on sore muscles. If your child is experiencing growing pains and the mattress is more than five years old, the mattress may be contributing to the problem.
Shop: Bunk Beds at Mattress Miracle
Shop This Topic at Mattress Miracle
Good student and dorm picks at Mattress Miracle:
Or twin XL mattresses in our Brantford showroom.
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
What mattress is best for kids with growing pains?
A medium-firm pocket coil mattress provides the best combination of spinal support and pressure relief for children with growing pains. Individually wrapped coils respond independently to each body part, allowing sore legs and thighs to rest without the compression that a uniform foam slab creates. Our Restonic ComfortCare Twin and Double are the most recommended options for this age group.
Does a mattress affect growing pains in children?
A mattress does not cause growing pains, but the wrong mattress can make them worse. A surface that is too firm creates pressure against already-sore leg muscles. A surface that is too soft allows the spine to sag, which stresses the muscles further. The right mattress reduces the number and severity of nighttime wake-ups by giving sore muscles a recovery-friendly surface.
Should I get a firm or soft mattress for my child?
Neither extreme is right. Children with growing pains do best on a medium-firm mattress (about 6 out of 10 on the firmness scale). This provides enough support for proper spinal alignment while allowing enough contouring to relieve pressure on the calves, shins, and thighs where growing pains concentrate. Come in and have your child try the mattress in person at our Brantford showroom.
What helps kids sleep through growing pains at night?
A combination approach works best: gentle stretching before bed, a warm bath, massage during episodes, and a supportive mattress as the recovery surface. A pillow between the knees for side sleepers or under the knees for back sleepers reduces muscle tension in the legs. If episodes are frequent or severe, consult your paediatrician.
Does Mattress Miracle carry kids mattresses?
Yes. We carry Restonic ComfortCare in Twin, Double, Queen, and King sizes, as well as the Sleep In flippable mattress collection. Brad can help you choose the right firmness and size for your child's age, weight, and sleep needs. Call (519) 770-0001 or visit us at 441 1/2 West Street, Brantford.
Sources
- Uziel, Y., & Hashkes, P.J. (2007). Growing pains in children. Pediatric Rheumatology, 5(1), 5. doi.org/10.1186/1546-0096-5-5
- Evans, A.M., & Scutter, S.D. (2004). Prevalence of "growing pains" in young children. The Journal of Pediatrics, 145(2), 255-258. doi.org/10.1016/j.jpeds.2004.04.045
- Jacobson, B.H., et al. (2008). Effect of prescribed sleep surfaces on back pain and sleep quality in patients with low back pain. Journal of Chiropractic Medicine, 7(1), 1-6. doi.org/10.1016/j.jcme.2007.11.003
- Kovacs, F.M., et al. (2003). Effect of firmness of mattress on chronic non-specific low-back pain: randomised, double-blind, controlled, multicentre trial. The Lancet, 362(9396), 1599-1604. doi.org/10.1016/S0140-6736(03)14792-7
- Lehman, P.J., & Carl, R.L. (2017). Growing pains: When to be concerned. Sports Health, 9(2), 132-138. pmc.ncbi.nlm.nih.gov/articles/PMC5349398/
Visit Our Brantford Showroom
We are located at 441½ West Street in downtown Brantford. Free parking available. Our team does not work on commission, so you get honest advice based on your needs.
Mattress Miracle , 441½ West Street, Brantford, ON · (519) 770-0001
Hours: Monday–Wednesday 10am–6pm, Thursday–Friday 10am–7pm, Saturday 10am–5pm, Sunday 12pm–4pm.