• 35 degrees Celsius (daily life), 45 degrees Celsius (work), 55 degrees Celsius (outdoor) three heating modes for you to freely choose, to meet your different needs of use
• Made of high quality cotton material, wear-resistant and durable, not easy to deform and pilling, long service life. Good breathability brings you a comfortable wearing experience
• Twice as elastic as ordinary fabric, can carefully wrap the foot and ankle, waterproof and washable, can be used many times
• Using 3.7V 4000mAh high-capacity power bank(not included), the socks can withstand long working hours without frequent charging

Specifications:

• Type: heated socks
• Material: cotton
• Heating mode: three modes
• Battery capacity: 4000mAh * 2 (not included)
• Voltage: 3.7V