- Innovative warmth - Optimal comfort - Cold defense | Kalsten
ENJOY WARM AND COZY FEET
Kalsten is the perfect solution for everyone suffering from cold feet.
Experience unparalleled warmth and comfort throughout the entire winter.
FEATURES
✔ Warmth Everywhere
The Kalsten provides instant cozy warmth in all shoes and banishes cold toes.
✔ Cozy Adventures
Embark on adventures, even in frosty weather, with insoles that offer flexibility and warmth with every step.
✔ Odor-Free Comfort
Made from breathable materials, the Kalsten keeps your feet cool and dry while ensuring hygiene and comfort.
✔ Winter Fashion
Available in various sizes and colors, these insoles perfectly match your winter shoes, combining style with convenience.
TECHNICAL DATA
Material: EVA and TPU foam
PACKAGE CONTENTS
1x Kalsten insoles
1x user manual
1x packaging box
Free standard shipping on all orders. No minimum purchase.
- Ships to: United States
- Processing: 1–4 business days (Mon–Fri)
- Transit: 5–10 business days
- Total delivery time: 6–14 business days
- Order cut-off: 5:00 PM PST
You will receive a tracking number by email once your order ships. Please allow up to 48 hours for tracking to update.
See our full Shipping Policy.
You have 14 days from delivery to request a return.
- Email support@open.shop with your order number to start a return.
- Items must be unused, complete, and in their original packaging.
- Return label: flat $9.99 USD, deducted from your refund — nothing to pay upfront.
- Damaged, defective or incorrect items: we cover all return and replacement costs.
- No restocking fees.
- Exchanges: contact us and mention "exchange" — the new item ships once your return arrives.
- Refunds are issued within 7 business days of inspection.
See our full Return Policy.
Questions about your order or our products? We're happy to help.
Open
Hooizolder 214
Drachten Friesland 9205CD
Netherlands
Email: support@open.shop
Customer Service:
Monday to Friday, 8:00 AM – 6:00 PM PST (excluding public holidays)
We reply to all messages within 24 hours on business days. Weekend messages are answered on Monday.
For quick answers, visit our FAQ page or use our Contact Form.
