Rothco's Tactical MOLLE II 3 Day Assault Pack Features A Large Main Compartment With An Internal Hydration Panel, Sternum Strap That Clips Securely Across Your Chest, Between The Shoulder Straps To Give You Greater Support And Limit Shifting, Adjustable Waist Belt For Additional Support, Foamback Support Panel And Padded Shoulder Straps For Comfort. Additionally, The Tactical Pack Features MOLLE Attachments On The Front & Sides Of The Backpack And Accessory Loops. Made of Nylon.