The Osprey Raptor 14 Hydration Backpack in Blue is a high-quality backpack designed for outdoor activities such as backpacking. With a 14L volume and made of durable polyester and nylon materials, this pack is both lightweight at 2.12lbs and collapsible for easy storage. It features a convenient straw for easy hydration on the go, making it the ideal choice for both men and women looking for a reliable and functional hydration pack for their adventures.