isnowood 35L Lightweight Packable Backpack- Durable Water Resistant Travel Hiking Bike Foldable Dayback for Men & Women DURABLE: The packable backpack uses high quality tear-resistant and waterproof material, provides extra strength and long-lasting performance. Heavy duty SBS metal zippers across the daypack available. Plus, longevity is further enhanced by bar-tacks at major stress points. LIGHTWEIGHT & COMPACT: Ultra Lightweight (0.65LB) and easy to folds into the small bag (9.5*1.6*7.8 IN). Fold the traveling backpack into its own pocket for storage(no more excess baggage fees),and unfold it when you reach your destination. You can throw it in your suitcase or car and have an extra bag without it taking up space. Perfect for day trips, vacation, travel, sports, day hikes, school, bike, camping ,cycling and shopping. LARGE CAPACITY & MULTI PARTS: The foldable backpack has 35L of storage space, with a main drawstring compartment, a front pocket, two top zipper pockets and two side pockets. You can put the laptop, clothes and travel gear into the main compartment, small accessories into the two top pockets for easily use and water bottles and umbrellas into the two side bags. COMFORTABLE: Its straps are breathable with carved mesh and many sponge liner which can relieve your shoulder pressure. Adjustable long shoulder straps fit any sizes of people. The breast band with a whistle buckle can help you lock the collapsable backpack firmly into the right place. GET THIS COOL BACKPACK RISK FREE: Your satisfaction is our top priority, this fashion backpack is backed by our unconditional money back guarantee policy. Makes a thoughtful gift to a dear friend who loves traveling, or family member who is into sorts and outdoor adventure.