On Men's Cloudsurfer 2 - Black/Black Size:9.5 Sock incorporates Heat Fusion heating

Sock incorporates Heat Fusion heating elements with easy S-pack battery integration

22% Polyamide

padded shoulder strap and convenient grab handles

Fitted: The cut is designed to fit closely to the body

On Men's Cloudsurfer 2 - Black/Black Size:9.5 Sock incorporates Heat Fusion heatingPrepare for effortless feeling everyday runs. The ultimate ride sensation with soft CloudTec Phase cushioning. Key Features: Weight: 261g Breathable mesh upper for ventilated comfort Updated tongue construction for a more comfortable fit Embroidered eyelets and overlays made using recycled yarn Refined CloudTec Phase cushioning for a smoother ride Helion superfoam midsole for soft cushioning sensation Durable, computer optimized outsole and updated