Thermalsoft Durapack Hot & Cold Pack by Mettler Electronics.
ThermalSoft Durapack Hot/Cold Pack by Mettler maintains an even temperature over the entire pad. Soft gel contents are leak-proof and contain no liquids or dyes. Biodegradable, non-caustic and reusable. For heat therapy, microwave or heating the pack in water. Keeps it pad-like shape even at high temperatures and will not liquefy when heated. Stay flexible when frozen. Bends to fit around treatment areas and maintain their thickness no matter how severe the bend.