Mooncolour Ultra Lightweight Packable Outdoor Backpack 18L DESIGN: dual zippers; 1 major compartment with 2 side mesh pockets; inner pouch on top for folding itself or accessories(cards, etc.); key holder for keys; palm-wide top strap; MATERIAL & FEATURE: high quality nylon; reinforced seam; durable; water-resistant; breathable; non-slipped pressure-absorbing adjustable shoulder strap; handy and spacious; OCCASION: back-up and carry on for hiking, vocation, travel, camping, driving; gym; daily walk-around; day trips; SPACE SAVING: fold: 5.51*4.72*0.98 Inches; ultra lightweight (5.2 ounces); airport hero; maximum weight capacity: 10KG; space capacity: 18 Liters 2 YEARS' WARRANTY: Replacement or return