Official Shop Backpack Mountaineering Rucksack Hiking Bag Rucksack Outdoor Commuting Storage Water Repellent Disaster Prevention Lightweight High

[Specifications] 25L-Expanded size (50*29*16cm), Color: Midnight Black, Buckskin Brown, Weight: Approx. 600g, Material: Polyamide fiber + polyethylene. 35L-Expanded size (62*25*20cm), Color: Midnight Black, Buckskin Brown, Weight: Approx. 1.1kg, Material: Polyamide fiber + polyethylene. [All the features you want] Roll-top design (35L only), shock-absorbing partial pressure, rational base distribution, breathable backpack, polymer fabric, can be used in multiple scenarios, easy to carry, water repellent. [Breathability] AIR Breathable Honeycomb Mesh: Comfortable and breathable to carry, equipped with a three-dimensional cushioned back pad that creates air passages to quickly release moisture, heat, and sweat. [Scientific partial pressure] Fits perfectly to the body, stabilizes your movements, and reduces stress on the shoulders and back. The adjustable chest belt design improves the stability of carrying, and saves energy without shaking even when going uphill. It also comes with a one-click buckle, which automatically pops up with just one press. [Reassuring Product Support] To ensure that our customers can purchase and use Naturehike products with confidence, we offer a one-year warranty from the date of purchase. We take every precaution to ensure the quality of our products, but in the unlikely event that the product has an initial defect or is no longer usable, we apologize for the inconvenience, but please contact us through your Amazon purchase history with your order number attached.