1、It is made of high-quality water-repellent nylon fabric with PVC skin on the bottom, waterproof, moisture-proof and dustproof. 2、Add USB charging interface and USB charging cable can through through mobile power to charge the mobile phone, which is very convenient. With the keychain and make the small items can easily be looked for (such as keys, etc.) 3、Large-capacity space and independent space to meet all your needs and storage all your baby's items, large open back pocket, easy to take out or put in the required items. 4、The front pocket built-in aluminum foil insulation bag, can keep the baby's drinks a certain temperature. 5、The side pocket elastic design, and equipped with a paper towel to take apart, easy to take out the paper towel. Features: It is made of high-quality water-repellent nylon fabric with PVC skin on the bottom, waterproof, moisture-proof and dustproof. Add USB charging interface and USB charging cable can through mobile power to charge the mobile phone, which is very convenient. With the keychain and make the small items can easily be looked for (such as keys, etc.) Large-capacity space and independent space to meet all your needs and storage all your baby's items, large open back pocket, easy to take out or put in the required items. The front pocket built-in aluminum foil insulation bag, can keep the baby's drinks a certain temperature. The side pocket elastic design, and equipped with a paper towel to take apart, easy to take out the paper towel. With a dirt storage bag, dry and wet separation, you don't have to worry about putting wet and dry items together. Widened adjustable shoulder strap design, suitable for long time walking and more comfortable. Specification: Material: Nylon Size:40 x 25 x 16cm / 15.7 x 9.8 x 6.3 inch (appr.) Package List: 1 x Backpack with USB