HypaCool Instant Cold Pack (Standard)Unit : Carton of 48 The HypaCool Instant Cold Pack provides instant pain relief quickly and easily to sprain and strains during the acute stages of injury, when treatment is most important. The cold packs are single use and are easily disposed of in ordinary household or business waste. The cold pack is ideal for emergency pitch side use or relief on the trail. The packs are activated with a chemical reaction when squeezed and do not require pre