The wool blend Battery Sock ensures all day warmth and comfort. A Velcro® pouch holds the 9V battery and the toes and heel are reinforced for durability.
Features
Wool blend fabric
All over cushioning
9 Volt battery power
Chafe-free toe seam
1-Pair Pack
Composition
71% Acrylic, 19% Polyester, 10% Wool
Small = Men's 3-5.5, Ladies 4-6.5, Medium = Men's 6-8.5, Ladies 7-9.5, Large = Men's 9-12, Ladies 10-13 X-Large = Men's 12.5-15