Ice-Brix Biodegradable packs. Gel Packs keep contents cool and help protect the environment at the same time. Manufactured with biodegradable polyethylene film that degrades into water, carbon dioxide and biomass, leaving no heavy metals of harmful residues behind. Sustains an 18 month shelf life if stored properly (temperature does not exceed 86 degree F). Available in white color. Measures 8-inches length by 6-inches width by 1-1/4-inches height.