Designed for cooling Byetta, Novolin, Humulin and Humalog insulin, and other injectable medicines while traveling or at work, outdoors or in your vehicle! Cools 4 diabetic medicine vials or 1 injectable pen for up to 20 hours. Includes 2 re-freezable ice packs (use 1, freeze the spare). Designed for standard 10 mL insulin/injectable medicine vials OR one injectable pen up to 7” in length. Temporary cooling of medicine vials or pens during travel or work, outdoors or vehicles. Convenient storage pouch for insulin syringes and supplies. Portable & Lightweight. Size: 7 7/8”L x 3”W x 4 ½"H; Weighs less than 1 lb.