Large Capacity Multi-functional DesignThis 35L waterproof outdoor backpack is perfect for hiking, sports, and travel, offering ample space for all your essentials. Premium Durable ConstructionCrafted from high-quality water-resistant and tear-resistant nylon fabric with reinforced stitching at stress points for long-lasting use. Foldable and LightweightThe backpack is lightweight and foldable, smaller than a book after folding, for convenient storage and transport. Thoughtful FeaturesWith reflective design, equipped with breathable mesh shoulder straps, a chest clip with built-in survival whistle, and side elastic bands for trekking poles, ensuring comfort and practicality. Versatile Storage OptionsFeatures a spacious main compartment, internal zippered pocket for valuables, and two large mesh side pockets for water bottles or umbrellas. Travel-FriendlyIdeal for avoiding overweight luggage fees by unfolding it from your checked baggage and using it as a carry-on for excess items. Specifications: Capacity: 35L Material: Nylon Weight: 0.4KG (0.88 lbs) Folded Size: 7x6x2 inches Closure: Two-way metal zippers Bottom: Double-layered for added strength Suitable for: Outdoor travel, camping, hiking, day trips, and shopping Package included: 1 x Backpack Not included other items