Grabber Foot Warmers are thin, comfortable air-activated Warmers that fit in your shoe or boot, and provide over 5 hours of soothing warmth beneath your feet. The latest addition to the best-selling Grabber line, Foot Warmers contain a revolutionary warmer technology. Medium Size Foot Warmers fit Men's Shoe Size 4-7, and Women's Shoe Size 5-8 (Bag of 20 Pair). All Grabber Warmers are designed for one-time, disposable use.

(Individual Warmer Specs: Size 3" x 9"; Avg Temp 95 F/35 C; Max Temp 102 F/39 C; Duration 5+ Hours)