The Arete 18 is a highly versatile hiking backpack from the brand Camelbak, which can be transformed into a reservoir sleeve when not in use. Ideal for day hikes, the Arete 18 allows you to carry all the necessary gear while staying perfectly hydrated thanks to its included 1.5-liter water reservoir. Lightweight and highly compressible, you can also use it as a complement to a larger travel bag to organize your belongings without adding bulk. Materials: 100% nylon Ultra-lightweight and compressible materials Water-resistant Includes Crux™ water reservoir Provides 20% more water per sip Ergonomic handle for easy refilling and an on/off lever to prevent leaks Secure zippered pocket for essentials Reversible design transforms into an insulated reservoir sleeve Removable sternum strap for a customized fit Dimensions: 40.5 x 23 x 23 cm Volume: 16.5 L Water reservoir volume: 1.5 L Weight: 300 g Camelbak Arete 18 - Walking backpack