Experience exquisite comfort in the cold outdoor with OCOOPA's rechargeable Hand Warmers. This electronic pocket heater is made of high-tech aircraft-grade aluminium and ABS material, powered by a 5200mAh power bank optimised to ensure circuits' longevity. With fast heating in mere seconds on three different levels, wearers can take them on the go for a long outdoor walk or use them anywhere as instant relief from Raynaud's arthritis and similar hand pains.