Cotton Whisper Casual Style Lightweight Waterproof Laptop Bag School Backpack nylon Material: Nylon, Weight: 0.11kg, Water proof, Scratch proof High-quality nature durable fabric, Comfort, Antibacterial and easy clean. Breathable back, good design for school, travel, outdoors. Large capacity and side pockets for umbrellas, stationery, water bottles, key Size: 18.5*12*10