The Red Medium Transport Packs are made of a heavy duty 600D polyester, molle and hydration bladder compatible. This well designed Transport Pack also comes with heavy duty black zippers with a pu coating for water repellency and has one large main compartment with zippered pouch and mesh pocket with an additional 3 pockets and storage compartments. These Transport Packs have fully padded adjustable backpack straps a padded back with breathable mesh backing and a top carry handle making them an ideal multi purpose bag for school, military, law enforcement, outdoors and everyday lifestyle bag.