Description:Made from nylon fabric, water and tear resistant, lightweight and durable. Spacious main bag and numerous bags of great capacity. Ultra light, reduces the backpack load weight so that they carry more other items. Separated storage bag, prevents the items inside backpack to be dirty, comfortable and practical. Two side pockets, more carry water bottles, comfortable for hiking, climbing, camping enthusiasts. Ergonomic padded shoulder straps and back support for best ventilation and comfortable load. Adjustable shoulder strap, breast strap and waist straps to fit your needs. New generation backpack with highly sensitive to capture solar energy solar panel, allowing better and more efficient charging of your mobile device, accessory or Power Bank. Concave point design to enhance thermal energy absorption. Front solar panels can be removed separately for use. With a humanized USB charging interface design, you can easily keep your smartphone full power anytime and anywhere. That’s more convenient in your life. Scratch resistant PP board. The anti scratch PP board on backpack both sides, to prevent thieves cutting and stealing goods. Full concealed zipper. Invisible zipper design on back, safe and easy to take. The fashion simple appearance keeps your young personality. Waterproof fabric, in rainy days, internal items will not be wet. Suitable for all kinds of situations, such as shopping, party, business, school, trip, outdoor sports etc. Specifications: Features: Waterproof, USB charging interface, solar powered, noctilucent strip Main Material: Oxford fabric Lining Material: Polyester Color: Black/purplish red/blue/grey/green/purple Dimensions: 37 x19 x47 cm Weight: 750g Capacity: 36-55L Waterproof: Yes Rain cover: No Maximum power: 5.3W Best working voltage: 5.5V Best working current: 0.96A Open circuit voltage: 6.8V Short circuit current: 1.06ASpecifications:Solar charging design Noctilucent strip Large capacity Splatter proof High-grade nylon fabric Resist wear and abrasion Convenient USB charging interface Comfortable and breathablePackage Included:1 x BackpackNotes:Due to different computer screen, the color of the actual items may slightly different from the listing images. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understanding.