①. Key Features: Foldable - The ultra-lightweight travel hiking backpack can be folded into the inner zipper pocket to fit anywhere, and unfolds from pocket to backpack in seconds. Don't worry about unnecessary weight, saving energy to enjoy your travels. Waterproof and durable - Made of 420D waterproof nylon fabric, abrasion-resistant, scratch-resistant, tear-resistant and strong enough to ensure long-term performance. Thanks to the waterproof breathable fabric and hidden zippers, the items stored in the pack will not be damaged by moisture. Large capacity - 25L capacity, only 0.3 pounds, consists of 1 spacious main compartment, 1 inner pocket, 1 front zipper pocket and 2 mesh side pockets; Designed for various storage needs to keep your belongings well organized. Functional - Adjustable breathable straps ensure a proper fit and relieve stress from your shoulder. with smooth metal zippers make it more durable. Reflective straps keep you safe all the time when you are out in the evening. Multifunctional - Simple stylish appearance and multi-functional function, suitable for both men and women; A choice for daily use, travel, vacation, hiking, camping and other activities. ②. Specifications: Color: Black/Grey/Blue/Green/Pink Material: Nylon Unfolding Size: 16.5'*12'*6.3' Folding Size: 9'*5.5' Weight: 0.3lbs / 132g Capacity: 25L Type: Travel Bags Gender: Women, Men