MEDICOOL's PenPlus Insulin Case protects all your valuable diabetic supplies. Its stylish ergonomic design makes it the perfect case for men or women, as well as children, seniors, and medical personal. It can be attached to a belt, placed inside a purse or briefcase, or carry it using the detachable hand strap. For Vials or Pens Cools for up to 12 hours Protective pocket for meters, GSF-SYRUP (13.4 gm of carbs), and more Includes 1 Large Gel Pack Colour: Black (Supplies Not Included) Size: 8 x 4 3/4 x 2 7/8 inch (20 x 12 x 7.3 cm) When used with the Re-freezable Gel Pack the PenPlus Case can hold up to four vials of insulin or two insulin pens keeping them safely cool for up to 12 hours.