Voltage rating: 5V,2A Battery Rechargeable battery included
Material: lightweight polyester, cotton waterproof, breathable fabric
Heated material:super composite filament
Size: S M L XL
Heated area: Upper back and Chest
Usage time: 3 -6 hours
High-3 hours 50-55℃
Middle-4 hours 45-50℃
Battery can not be wash, please plug out and cover waterproof endcap before washing.
Hand wash or machine wash in a small laundry bag.