Hello Dear friend. Welcome to visit our store.   Lightweight design is easy for carrying: Made From Durable Eco-Friendly Oxford Fiber Fabric With Two "S" type Shoulder Straps, Shoulder belt made of honeycomb breathable material, Ergonomic design ensures the dispersion of gravity of the backpack and protects the spine. Please Note:Due to possible physical differences between different monitors (e.g. models, settings, color gamut, panel type, screen glare, etc), the product photography is illustrative only and may not precisely reflect the actual color of the item received. Instruction:There may be 1 - 3 cm differ due to manual measurement. Please choose the right one according to your actual situation. We sincerely hope that you can leave us a positive feedback and 5-star Detailed Seller Ratings if you feel satisfied with our product and service. Thanks so much and enjoy your day!   Description: Name: Laptop backpack+Crossbody bag+Pencil bag Material: Oxford Fiber Fabric Features: waterproof, wear resistant, excellent quality, portable, large capacity, strong load bearing Function: Commuting, business, school, travel Size: 42x27x12cm, 23x20x4cm, 18x9cm (1cm=0.39inch) Weight: 1.2KG Color: Grey Gender: Unisex