BLACKHAWK! S.O.F. Ruck Pack Features 10 gear pouches with cinch drawstrings and quick-release buckles on the lids Constructed of heavy-duty 1000 denier nylon Compatible with BLACKHAWK! Hydration System with hydration tube routing system and easy access pouch Fits standard A.L.I.C.E. Ruck Frame (not included) 6000 cu. in.