specification: _x000D_Item Type: Insulin Cold Storage Bag_x000D_Material: Waterproof Imported Oxford Cloth_x000D_Optional Color: Green, Black, Gray, Black Bottom Red Flower_x000D_Size: Approx. 21 x 11.5 x 3cm / 8.3 x 4.5 x 1.2in Features: 1Multiple?layer designs, easy to place different kinds of medicines. 2Insulin bag cold storage time: keep the temperature in the pack 2?24 degrees Celsius, about 12 hours in summer, about 24 hours in spring and autumn. 3Zipper designs, easy to open and close the bag, can better protect internal medicines. 4Made of oxford cloth, waterproof and eco?friendly and durable. 5Light weight and portable, easy to carry when going out. PackageList: 1 x Insulin Cold Storage Bag