The smallest rechargeable handwarmer on the market — fits perfectly in any glove pouch or mitten. Compact, affordable, and adorable — making it the perfect little gift. - Heats up in just 3 seconds - 3 heat levels - Lasts 2.5–5 hours per charge - Fit in perfect into glove pouches Ocoopa is the only dedicated rechargeable handwarmer brand focused on complementing your lifestyle. With over 4 million users worldwide, we deliver the perfect palm of warmth to everyone.