• High-quality material: Our self-heating cold-proof heating socks contain 75% nylon and 25% spandex
• Self-heating: It can generate heat on the feet to keep warm, replace exercise, and protect the body's health
• Simple to use: Open the socks, wear them directly on your feet, and then put on shoes and carry out your daily activities normally
• Cold-proof: It can promote blood circulation, help maintain body heat, and protect your feet from cold damage

Specifications:

• Material: 75% nylon, 25% spandex
• Size: 20*8cm