Features: Specially formulated non-toxic gelatinous thermal material that completely alleviates gel migration away from the injured site found in competitors packs This unique composition is vacuum sealed in a sturdy 8.5mil PE/Nylon covering and slipped into a re-closing, washable, nylon pouch Dual hook straps run lengthwise edge to edge of the heat and ice pack pouch to eliminate rolling and insuring an easy application to a sore back Patented design utilizes rugged hook and loop to secure and position your heat and ice exactly where you need ...