BOZONLI Trolley School Bags for Boys Girls Backpacks Rucksack with Wheels Backpack Students…, Starry Sky, 31 * 21 48 cm, Travel

【Relieve back pressure】Trolley backpack can more effectively help reduce back pressure, make the spine healthier, and protect it from weight. 【Effective waterproof】Nylon fabric, special coating treatment, effective waterproof, wear-resistant, not easy to fade. 【Off-ground design】Two-wheeled cart with off-ground design, effectively resists dust and water stains, avoid soiling your backpack. 【Comfortable Shoulder straps】widened and thickened straps, mesh and sponge design, wicking, breathable, soft and comfortable, making your carrying easier 【Large capacity】LxWxH:31x48x21cm/12.2x18.9x8.2inch.Make the most of space, multi-layer storage separate layer, convenient for sorting items.Can accommodate your laptop, clothes, A4 magazine, books, umbrella, water bottle, stationery etc.