Y201 Winter Warm Tube Heated Cotton Socks Outdoor Heated Ski Socks, Style:with Battery Box(Black)

1.Material: Cotton2. Function: keep warm, absorb sweat, prevent friction3. Specifications: without battery box, with battery box4. Battery: AA battery x 3 (shipping without battery)5. Nano composite fiber heats up, quick heat keeps warm6. High elasticity, high ductility, not easy to deform, suitable for different people7. Double layer thickening and fleece, soft, comfortable and warm8. Waterproof treatment at the power interface, support for washing9. Size: Free Size10. Product size: 23 x 32 cm11. Product weight: 99.2g/pair