Ask Lenka | ThermoMax Wool | Merino wool sole
Ask Lenka | ThermoMax Wool | Merino wool sole
Warm feet – technically improved insole
check_circle 92% merino wool
check_circle Antibacterial treatment
check_circle Updated construction
Please measure your foot to order the correct size.
You want a little extra room in front of your toes. Choose a size that is about 1 cm longer than your foot.
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Ask Lenka | ThermoMax Wool | Merino wool sole
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Product information
Product information
When your child comes home after a day out in the snow, you take off their boots and notice that their feet are cold. That's when ThermoMax Wool makes a difference - a replacement sole that breathes new life into your child's winter boots.
Merino wool is a fantastic natural material when it comes to heat regulation. The 92% merino wool in this insole creates air pockets that insulate from cold ground and keep heat close to the foot. At the same time, merino wool is naturally breathable, which means that if your feet get a little warm during play, excess moisture is transported away. The antibacterial treatment ensures that the shoes stay fresher for longer, even when used intensively day after day.
Be Lenka has technically improved this insole compared to the original model, which means that it may differ slightly in design but offers even better performance. The insoles are used in Be Lenka's popular children's model Winter Kids - the winter boot that is already appreciated by parents all over Europe for its combination of barefoot philosophy and winter protection.
Be Lenka continuously develops its products based on experience and feedback from users. When they saw an opportunity to improve the insole technically, they did so, which shows the company's commitment to quality. It's not just about selling a product, but about truly supporting children's comfort and foot health throughout the winter months.
When you switch to a new ThermoMax Wool insole, your child's winter boots will get a new lease of life. The warmth returns, comfort improves, and you can feel confident that their feet are kept warm from the ground up. It's a small detail that makes a big difference to your child's winter life.
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Material information
Material information
Material:92% merino wool – natural thermal insulation and breathability
Treatment:Antibacterial – combats odor and keeps shoes fresh
Design:Technically improved – updated design for better performance
Fit:Designed for KidsComfort sole – perfectly adapted to Snowfox Kids and Panda
Thermal performance:Excellent thermal insulation – protects against cold from the ground
Comfort:Soft and comfortable – natural material that feels good against the skin
Hygiene:Antibacterial – maintains freshness with daily use
Compatibility: Ereplacement sole for Be Lenka Winter Kids
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Return information
Return information
Delivery information
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Delivery time:
We need about 5-10 business days to pack and ship each order, except for products from Saltic, where it takes about 10-15 business days due to the manufacturing process. - Warehouse: We currently have warehouses in Sweden, the Czech Republic, Slovakia and Estonia.
- Shipping : Our shipping fee is normally 69 SEK for standard shipping.
- Right of withdrawal : You always have the right to cancel your purchase within 14 days according to the Swedish Distance Selling Act. This is counted from the day you receive your order. Returns made after the right of withdrawal has expired and up to 30 days will be refunded with a store credit on your customer page that you can use for new purchases.
- Complaints : If the product is defective, you have a warranty according to the Consumer Purchase Act. We want you to feel satisfied, so contact us immediately if you experience any problems and we will do our utmost to fix or replace your purchase.
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Returns you send to our warehouse in Sweden
. You can order a return label from us and you will then receive a QR code or return label that you take to your nearest representative. This service costs 69 SEK and we will deduct this amount from your refund, so you do not have to spend any money.
You can also arrange your own shipping if you want. - The right of exchange does not apply to goods in the Sale category.

Don't forget the most important thing!
Give your new shoes some love so they stay looking great for many years to come.
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Natural shoe wax | 100% natural leather care
Regular price 169 krRegular price 169 kr Sale priceUnit price / per -
Shoe polish for suede | Cares for and adds shine
Regular price 109 krRegular price 109 kr Sale priceUnit price / per -
SAVE 20 krECO Proofer | Water-based Impregnation
Regular price 209 krRegular price 209 kr Sale priceUnit price / per229 kr8% -
Shoe Deo | For fresher shoes
Regular price 109 krRegular price 109 kr Sale priceUnit price / per -
Carbon MaxX Upper Cleaner | Professional cleaning for all materials
Regular price 199 krRegular price 199 kr Sale priceUnit price / per
Real shoes with a good fit - free feet!
Treat your feet to really good shoes this summer.
Why are barefoot shoes good?
Regular shoes are often too tight, which has squeezed your toes together for years. You may develop hallux valgus, which requires surgery, or perhaps a heel spur that takes months to heal.
Tight shoes
Healthy feet
Your toes need their space.
Your toes are probably squeezed into regular shoes like most people. Maybe you have pain in your feet or toes. Most often it is the big toe that takes the most damage. If you walk for too long, you can develop Hallux Valgus which becomes so bad that surgery is required.
With barefoot shoes, you give your toes space and allow your feet to strengthen. Many people experience a dramatic difference in just a couple of weeks.
Classic shoes
TJÅKKO Barefoot shoes
Your feet affect your entire body
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You were born with perfect feet and toes.
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Take care of your feet on time
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Switch to barefoot shoes and watch your feet transform
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Experience the freedom and feeling of real shoes


