Easy to carry - 20L large capacity, suitable for 3-4 days of travel - Shoulder straps with foam padding for added comfort - Chest strap with adjustable length and position to enhance the stability of the backpack - The back panel is sponge padded, breathable and comfortable - Suitcase straps - Padded, quick-grip top handle for multiple carry options Excellent internal storage design - Padded laptop pocket holds a 17" laptop - Also has a 12.9"" tablet pocket - External USB charging port - Back anti-theft zipper pocket - Top quick access zip pocket - Side pockets can hold water bottles, umbrellas, etc. - Front pocket with keychain High quality materials - High-quality custom zippers are smooth and smooth - Durable nylon fabric, suitable for all-weather conditions Specification Weight: 1150g (±5%) Capacity: 20L (±5%) Size: 45×30×15cm (±1-2cm, when fully expanded)