Power Rut Back Pack, Quiet Durable Brushed Tricot Fabric, Large Main Compartments, Water Resistant Lower Accessory Pocket, Smaller Front Pocket, Padded Shoulder Straps With Adjustable Sternum Strap,Front Accessory Pocket, Hydration System Ready(Reservoir Sold Separately), Side Compression With H2O Deep Well Pockets, Dual Density Air Mesh Padded Back Panel, Dual Density Waist Wings & Lumbar Support.