18L Large Capacity and Lightweight: (Expanded) 27cm x 15cm x 40cm (Folded) 6cm x 6cm x 15cm Weight: 0.15kg Numerous Storage Spaces: Compartments: Main space x1, Front zip pocket x1, Side pockets x2 Durable Design: The water-resistant backpack is tear-resistant and made of strong nylon, with double stitching on the bottom and back for added durability. The zippers are abrasion-resistant and built to be more robust. Safety-Conscious Design: Reflective straps reflect light, making you visible to cars and others at night. Adjustable chest straps fit snugly to the body, making walking comfortable. Breathable mesh shoulder straps are well-padded, providing comfort without putting strain on the shoulders. Go Anywhere: This unisex, multi-purpose travel backpack is suitable for hiking, camping, school, sports, work, the beach, overseas travel, and more.