[Large Capacity And Lightweight]--This backpack capacity up to 20L.Its volume is 12.6''X18.89''X7.08''.The weight of this backpack is: 1.45lbs.It is perfect for globetrotters.It is also ideal for airport travel.Multiple compartments to keep your pens, keys, glasses and other items more organized and easier to find. [Secure And Durable]--This backpack is made of rip-stop nylon material high durability.with SAB zippers and a waterproof layer to protect your non-waterproof items inside the bag from water sprays. The contents of the bag do not get wet for a short period of time, but prolonged contact with water cannot make it completely waterproof. [Comfortable And Loose Fit]--Breathable and Adjustable Shoulder Straps Relieve Shoulder Pressure Comfortable wide and adjustable shoulder straps provide maximum relief for your shoulders. Breathable and supportive padded backrest is designed to maximize support for your back. Additionally, a top carry handle is included for comfortable transportation over extended periods of time. [Humanized design]--The back of the backpack has a hidden anti-theft pocket to protect your valuables from thieves.The compartments for water bottles on both sides adjust the pocket entrance to the size of the bottle to prevent it from falling out.The backpack has a luggage fixing strap on the back, suitable for traveling to fix it on your luggage/suitcase, sliding over the luggage upright handle tube for easy carrying. [after-sales service]--Our aim is to provide the best products and services to our customers. We support 18 months of customer service. If you have any questions or suggestions, please let us know. › See more product details