Features: 1. **Self-Heating Technology**: Our insoles feature advanced self-heating technology that activates quickly, providing consistent warmth to keep your feet comfortable in cold weather conditions. Perfect for cycling and skiing! 2. **Comfortable & Supportive**: Designed with your comfort in mind, these insoles offer excellent cushioning and support, reducing fatigue during long outdoor activities. Enjoy every ride or run without discomfort! 3. **Non-Slip Design**: The insoles are crafted with a non-slip surface to ensure they stay securely in place within your shoes, providing stability and confidence in every step, whether on the slopes or the trails. 4. **Durable & Lightweight**: Made from high-quality materials, our insoles are both durable and lightweight, making them easy to carry and perfect for any outdoor adventure without adding extra weight to your gear. 5. **Easy to Use & Disposable**: Simply place the insoles inside your shoes for instant warmth. Once they stop heating, they can be easily removed and disposed of, making them a convenient choice for outdoor enthusiasts. Our self-heating insoles contain water-absorbent resin, salt and wormwood extract. It starts quickly to keep you comfortable in cold weather. Its use is simple: just install the insole inside the shoe. The insole is disposable and can be removed after it stops heating. And can be warm all day care, stable and reliable.