HypaGel Hot/Cold Therapy Packs are great quality reusable gel filled packs that be can used for hot therapy when they are heated in the microwave or used for cold therapy if they have been placed in the freezer before use. The packs are long-lasting due to a burst and puncture resistant construction. The compact size of the hot/cold therapy packs makes them ideal for treating a small injury. Directions for how to use are written on the packaging for easy reference. HypaGel Hot/Cold Therapy Packs provide cost-effective hot/cold therapy, and are sold singly or in packs of 12, 24 or 48 – perfect for stocking a first aid kit.