Medicool Makes The Case For the safe transport and protection of insulin and temperature sensitive medication World's Leader in Products for People with Diabetes Since 1986 Insulin Protector ® Prefilled Syringe Case ™ Dia-Pak ® Deluxe D.I. Case ™ Dia-Pak ® Classic Dia-Pak ® Day Mate Pen Plus Case™ Medicooler ™