Instant Therapy - 6" x 10", Heavyweight, Insulated with a layer of foam Accu-Therm Cold Packs: Heavyweight - Insulated, 6" x 10", Qty. 24 Increase Comfort, Conformability and Effectiveness with Medline's Top-Seller, The Accu-Therm Cold Pack Cold pack activates instantly and offers patients a new level of comfort. A compress holder is required because these cold packs should not be applied directly to the skin. The insulated version has a foam layer to help direct cold therapy to the affected area.