The bottle bag is made of polyester material. They can hold a milk bottle. With convenient straps, can be used for hanging on bag or stroller. Can keep milk warm for hours. If you have any milk leaks, you can use quick wipe to clean them easily. Features -Color:Black -Material:Polyester -Size:26.00X24.00X17.00cm/10.22X9.43X6.68in - Convenient to take on any outing. It is ready to have warm milk for your baby at anytime. - Stylish and practical. The lovely look of the bottle bag will make people in a good mood. - The lightweight bottle bag has a secure zipper, so items stay safely enclosed. They can keep bottles warm or cold and are also water-resistant. - The material of the bottle bag makes for simple cleaning and the bags are completely machine washable. - Keep essentials organized and ready, the packing pouch is well crafted and ready for any outdoor plan. Package list: 1 x baby bottle bag