PVC;Reusable hot/cold aqua bead gel therapy pack for temporary relief of sore muscles; Microwave and freezer friendly; Instructions printed on back; Ingredients: Water, Glycerin, Sodium Polyacrylate; Latex-free Non-toxic; Not intended for children under the age of 3; Product Size: 0.75" l x 7.25" h x 3.75" d;