Features: 1.Waterproof: This kind of backpack can protect your items from water and dust effectively because it adopts nylon fabric you can use it without worries. 2.Wide Application: This storage bag is suitable for outdoor use such as school college hiking trekking backpacking climbing camping travel and other outdoor activities. 3.Large Capacity: The 30L design is enough to meet your different needs you can carry your computers clothes notebooks tools and other things easily. 4.Portable: Compact and lightweight this packsack is suitable for both men and women you can carry it easily without worries and when not in use you can fold it up to store. 5.Comfortable: The back is designed with sponge breathable and soft you can wear it comfortably because it is not easy to harm your skin or burden your shoulder. Specification: Material: nylon polyester liner. Size: Width: Approx. 30cm/11.81inch. Height: Approx. 48cm/18.9inch. Thickness: approx. 17cm/6.69inch. Capacity: 30L. Note: Due to the light and screen difference the item\\'s color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering. includes: 1 * Backpack