Expands from 12L to 16L: This expandable hiking backpack offers versatile use in one design. Simply pull open the expansion zipper to increase its capacity from 12L to 16L. It can store your laptop and daily essentials for commuting and day trips. After expansion, it can be used for hiking and short trips to store precious souvenirs during the journey. 4-IN-1 Quick-Access Shoulder Strap System: The integrated design of the mini hiking backpack includes a phone pocket(Fits up to 7 inches), a Bluetooth earbud pocket, an energy snack bag, and a hanging sunglasses reflective strip—keeps your essentials organized and within easy reach during hikes, day trips, camping, and cycling. 10 Pockets & Organized Storage：This travel backpack has 10 pockets for more organized compartments. 3D honeycomb shoulder pads and chest straps are used to distribute shoulder pressure. This small backpack is suitable for both men and women, suitable for hiking, day trips, short trips, and camping. Ultralight Backpack: Packable backpack Weighs Just 0.75 lb — Lighter Than a Can of Cola.This small hiking backpack folds down to just 8.66" x 8.07", allowing it to fit effortlessly into your suitcase or larger bag. The included multi-purpose detachable pouch can also be used independently as an organizer. High Quality Accessories：This hiking day pack is constructed from 400D high-density nylon, offering 3x the tear resistance for exceptional longevity. A durable water-repellent coating provides reliable protection for everyday outdoor use.The adjustable sternum strap fits different body types, and the strap buckle includes a built-in emergency whistle for quick alerts during outdoor activities. 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.