Instant heat therapy, reusable heat pack Product size:OEM:Any size + Any Shape +And Package | Original[43x28cm,800g]Material:Nylon Fabric Or Phthalate free PVC Or PE MaterialPackage:OPP bag(Or OEM Package:Color Box ,Paper Card,PVC bag ,PET box etc.)Used for:Non-Toxic ,Green ,Eco-Friendly ,Healthy ,energy-Saved,warm-Kept ,Heat..