2014 New Model Reusable Hot Cold Therapy Packs in medical products Product Name:Reusable Hot Cold Therapy PackDimension:16x16cm, 15x10cm, 21x13cm 17x14cm, 31x16cm, 13x9cm, unit weight 50g-80gApplication:Hot Compress: minor muscle, rheumatic pain, stiffness and muscle spams, arthristis, sciatica ,stain of lumbar muscle, menorrhalgia etc.Cold..