Mountaineering Bag Nylon Sports Backpack Large Capacity, Hiking, Camping Waterproof Backpack This is a multi-purpose backpack for everyone. Suitable for most occasions. Can be used for travel, outdoor activities, work or everyday wear. 2. This backpack is made of high quality nylon material and high quality materials. It is wear resistant, waterproof and has a long service life. 3. This is an expandable space package with a maximum space of 55 litres, allowing us to easily switch between space sizes to carry more items. 4. The back of the three-dimensional breathable mesh cloth bears the design to ensure that the back is ventilated and breathable, and the carrying is easier. 5. The molle system on the bag can hang some small bags, such as tool shopping bags, survival, gun clips, etc. You can put the kettle in the side pocket.