ThermalSoft® DURAPAK™ hot and cold packs maintain an even temperature over the entire pad. Their soft gel contents are leak-proof and contain no liquids or dyes. ThermalSoft® DURAPAK™ hot and cold packs are biodegradable and non-caustic. And, because ThermalSoft® DURAPAK™ are economical and reusable, you can send them home with your patients for continued therapy at home between office visits. For heat therapy, microwave or heat the pack in water. ThermalSoft® DURAPAK™ keep their pad like shape even at high temperatures and will not liquefy when heated. When used for cold therapy, ThermalSoft® DURAPAK™ stay flexible when frozen. They bend to fit around treatment areas and maintain their thickness no matter how severe the bend.