Hikingworld 3d Outdoor Large Capacity Pythons Grain Tactical Backpack, Shoulder Pack for Traveling Backpacking Trekking 45l Oxford fabric Material: 800D Oxford fabric+ Encryption Nylon fabric, High pressure nylon Straps Large capacity, about 45L, Comfortable for 15.6 inches laptop and accessories in the main pocket and the sponge enclosed. Durable, Strong abrasion, High quality practical design, and comfortable to wear Fully adjustable contoured padded shoulder straps with hard plastic D-rings for attachments Molle webbing and straps throughout are very robust and well stitched