-V-Cool Breast Pump Bag/Backpack. -Breast Pump Bag Size: 9.8"x5.5"x12.6"(L x W x H) -High quality guarantee:Polymer constant temperature material, can keep the temperature in the bag stable at about 4 ℃, and keep breast milk without deterioration. Large capacity, the white part can detect ultraviolet rays, and change the color according to the intensity of ultraviolet rays. The darker the color, the stronger the ultraviolet rays. -Simple Design: Eco-friendly fabric, no odor, no BPA, safer to use.The back is cold and breathable, and there is a small pocket for storing important items such as mobile phones, keys, cards, etc. -Multi-funcation: It can use as backpack, It is very elegant and suitable for many occasion like shopping,working, a little traveling etc,its no only a breast pump bag it also can use as a lunch bag,litler travel bags. -If you have questions, please send us an email and we will reply you as soon as possible.