SYALZ® – Insole SY
SYALZ® – Insole SY
Relieves knees, heels, and back
Cushioning for growing feet
Heel with shock absorber
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SYALZ® – Insole SY
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We tried several insoles for his knee pain, with no success. Syalz is the first one that actually worked. He wears them every day at school without even noticing. His posture has improved, and he can play sports again without suffering.
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My son complained every night about his heels after soccer. I thought it was just growing pains, but it became really painful for him. Since he started wearing Syalz insoles, no more complaints. He runs, he jumps, he’s back to being himself. Honestly, I recommend them to every parent.
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Lina had flat feet and often complained of pain at the end of the day. We could see she wasn’t walking properly. Since we put the insoles in her shoes, she doesn’t complain anymore and moves so much better. The change was quick — I didn’t expect that.
What size should I choose?
What size should I choose?
Between two sizes? Always go with the larger size. Simple. Adjustable. Designed to fit you.
How to measure foot length?
How to measure foot length?
- Tape a sheet of paper to a hard, flat surface so it won’t slip.
- Place one foot on the paper. Keep your feet shoulder-width apart with your weight evenly distributed.
- Take a pen or pencil, hold it straight, and mark the tip of the big toe and the back of the heel.
- Remove your foot and use a ruler or tape measure to measure the distance between the two marks. This is the length of your foot.
- Repeat with the other foot (note: one foot is usually slightly larger than the other). Use the longer measurement in our size chart to find the ideal fit.
- If your length falls between two sizes, we recommend choosing the larger one.
Do they really help with pain?
Do they really help with pain?
The insoles are designed for kids and teens going through growth who experience foot or leg pain, often caused by overpronation, Sever’s disease, or rapid growth. They realign the feet, reduce pressure on the joints, and absorb shock with every step. The result: less pain in the heels, knees, and even lower back. Most children feel real relief in less than 7 days.
Do the insoles fit in all shoes?
Do the insoles fit in all shoes?
Yes, the insoles are made to fit standard shoe sizes. The edges can be trimmed for a perfect fit, and the slim design won’t make the shoe bulky. They fit easily into sneakers, boots, school shoes, and more. They’re not just for sports — they’re designed for everyday comfort. No pressure, no guesswork. Just real support.
Shipping
Shipping
Delivery is handled by our carrier to the shipping address provided at checkout. This service is available throughout the United States and select international countries (Canada, UK, EU, etc.). Estimated delivery times:
- United States: 4–8 business days from shipment, barring unforeseen delays.
- International: 8–10 business days depending on the destination.
Sizing Chart
| US | UK | EU | Length (CM) |
|---|---|---|---|
| 10C - 11C | 9 - 10 | 27/28 | 17.5cm |
| 12C - 13C | 11 - 12 | 29/30 | 18.5cm |
| 1Y | 13 | 32/31 | 20cm |
| 2Y | 1 - 1.5 | 33/34 | 21.5cm |
| 3Y - 4Y | 2 - 3 | 35/36 | 23.5cm |
| 5Y - 6Y | 4 - 5 | 37/38 | 24.5cm |
| 6.5Y - 7Y | 5.5 - 6 | 39/40 | 25.5cm |
| M8 - W9 | 7 | 41/42 | 26.5cm |
| M9 - W10 | 8 | 43/44 | 27.5cm |
| M10 - W11 | 9 | 45/46 | 28.5cm |
Choose your usual shoe size.
If you’re between two sizes or if your foot length is close to the upper limit, we recommend going one size up for extra comfort. If you’re unsure, you can also measure the foot in cm (from heel to big toe) and refer to the “Length” column.
Parents share their experiences
Don’t let the pain settle in
If your child is experiencing heel, knee, or back pain, it’s not “normal.” In most cases, these pains are caused by flat feet or poor alignment. And without correction, they only get worse over time.
The right support, at the right time
SYALZ® has developed a lightweight, discreet insole designed for active kids. It absorbs shocks, supports the arch, and corrects overpronation from the very first steps. The result: improved posture and pain that gradually fades away.
Already over 10,000 kids relieved
Parents and health professionals notice results within days: less pain at the end of the day, easier movement, and a true return to a carefree childhood without discomfort or limitations.
Give your child real comfort
Order today and enjoy our 30-day money-back guarantee.
Nothing beats parents’ feedback
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★★★★★
Real relief every day
Ethan used to come home from school limping almost every day. He kept saying his feet “hurt underneath.” Since we put SYALZ insoles in his sneakers, that’s over. No more complaints — and even his teacher told us he’s more active at recess.
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★★★★★
Noticeable difference in just one week
She always had knee pain after dance class. We thought it was an injury, but it turned out to be posture-related. The insoles clearly made a change. She stands better, hurts less, and wears them easily in all her shoes.
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★★★★★
I didn’t think it would work this well
Noah has flat feet and used to complain about back pain after sports. I was skeptical at first, but the results came quickly. No more pain — he’s running again like before. These insoles have become a must in his sneakers.
