WHEN USE WHEELS When you use the wheels, we recommend you put the shoulder straps into BACK CONCEALED POCKET, otherwise the shoulder straps will be easy to damage because of friction off. WHEN USE STRAPS When you just use it as a backpack, we recommend opening the WHEEL COVER underneath to protect the wheels so as to use for a long time. Otherwise it is likely to stain the clothes. Large multi-compartment design Large main compartment is roomy to hold daily school books or nessary clothing. The unique design is very convenience for security check. It's big enough for a short trip about 1-2 days, and can fit under the airplane seat. Can carry a 15.6 inch laptop, 2 side pockets for water bottle or umbrella and a front pocket for pencils, keys, etc. THOUGHTFUL DESIGNS For senior school, high school, nursing school, university library studying, short trip, outdoor camping...... SKYMOVE 18 inches Wheeled Rolling Backpack SKYMOVE 18 inches Wheeled Rolling Backpack SKYMOVE 18 inches Wheeled Rolling Backpack SKYMOVE 19 inches Wheeled Rolling Backpack SKYMOVE 18 inches Wheeled Rolling Backpack Buying Options Buying Options Add to Cart Buying Options Buying Options Customer Reviews 4.2 out of 5 stars 365 4.2 out of 5 stars 365 3.9 out of 5 stars 15 4.8 out of 5 stars 17 — Price — no data — no data $152.67$152.67 — no data — no data Size 18 x 12 x 8 inches 18 x 12 x 8 inches 18 x 12 x 8 inches 19 x 13 x 9 inches 18 x 12 x 8 inches Style Wash Painting Red Flowers Colorful Shells Purple Pink Flower Dark Blue Dinosaur Capacity 35L 35L 35L 40L 35L Suit for Boys and Girls Boys and Girls Boys and Girls Boys and Girls Boys and Girls Wheels Cover ✓ ✓ ✓ ✓ ✓ Laptop Pocket ✓ ✓ ✓ ✓ ✓ Noiseless Wheels ✓ ✓ ✓ ✓ ✓ Padded Air-Mesh Back ✓ ✓ ✓ ✓ ✓