This 12-16L expandable, packable, foldable and lightweight hiking nylon backpack is designed for hiking enthusiasts, camping and travel enthusiasts who pursue lightweight and waterproof outdoor backpacks. It is made of 400D high-density nylon fabric, weighing only 0.75 pounds, but providing excellent waterproof and tear resistant protection, making it easy to cope with harsh weather. 10 smart partition pockets include a dedicated phone pocket, headphone compartment, and energy snack bag with reflective strips. Sunglasses can also be hung, and an adjustable chest strap and built-in safety whistle make your device within reach. Innovative and scalable designs can meet different capacity requirements. At departure, its exquisite 12L small backpack becomes a solid support for your day trip. After arriving at the destination, it instantly transforms into a 16L urban bag through our unique zipper expansion system, properly storing your souvenirs during the journey. Short distance travel, hiking, day trips, and commuting are all very convenient to carry, as it only measures 8.66 x 8.07 inches when folded. Whether it's city commuting or mountain climbing, this ultra lightweight expandable bag will be your most reliable travel companion. Product description Previous page Perfect for Day Trip Perfect for Hiking Perfect for Camping Perfect for Cycling Next page Previous page Next page 400D High-density Nylon Lightweight, High-Strength, and Durable! Stronger than regular nylon. 2 Water Bottle Pockets Max for 24 fl oz Bottles Water-resistant Water-resistant, Durable! Outdoor exploration, waterproof design makes your journey more comfortable. Breathable Shoulder Strap Thick shoulder straps relieve shoulder load, and breathable design makes the back more comfortable. Previous page Nex