... Weight: 200g Size: 20.5 x 15.5 cm Instant Hot Cold Pack:Specification:Size:20.5cm x 15.5cmGram:200gMaterial: ... PVC+Nylon Fabric Usage:Cold compress: put the cold/hot bag into freezer to be refrige for half an hour ... therapy for traumatic hemorrhage, heatstroke, itch, headache, stain, scald , fatigues.Hot compress: alleviate rheumatic pain, neural pain, sciatica,vertebral, pain, improve ...