The thinnest insulated Heat Ready sock made with merino wool in the foot for superior comfort. The AV30 is ideal for the active user that prefers the feel of a thin sock but wants the option of adding active heat for next level personal comfort thanks to the Heat Ready feature. Heat Ready makes it possible for you to boost your personal comfort with added active heat if the sock is used together with the Inuheat One Powerpack. Socks only - Powerpacks sold separately Features: Heat Ready Technology: Heat Ready Heating System consists of laminated polyester PU-panel with a coated stainless steel heating conductor, plastic connector with metal rivets and an NFC tag. Material: 23% Merino Wool 75% Polyamide 2% Elastane Activitied: Skiing, hiking, trail running, general outdoor activities Manufactured: Portugal and Sweden The thinnest insulated Heat Ready sock made with merino wool in the foot for superior comfort Specifications: Brand: Arctic Volt Model: AV30 Heat Ready Sock