1.Material: lightweight 420D polyester and cross ripstop 2.Capacity: 25L 3.Trekking pole loops 4.Elastic mesh side pockets 5.Bungee cord on front to attach jackets or other gear 6.Lash straps on the side to help compress bag contents and control total volume 7.Drinking system compatible 8.Ventilated pads made of durable mesh 9.Contoured hip belt with ventilated pads for extra comfort and stability 10.Durable spring steel frame provides a flexible and light structure 11.Contoured, padded shoulder straps with mesh tex 12.Top lid pocket