These pouches are made of 1000 denier Nytaneon nylon with all edges bound and closes with #9 YKK zipper and dual sliders with our HawkTabs. They attach directly to our 3-Day Assault Pack (603D00), Phoenix Pack (60PH00) or the BlackHawk Special Operations Medical Pack (60MP00). A great feature of the pouches is that they are ambidextrous! New Triangular design with dual adjustable cinch straps for absolute custom fit. Works great with: HydraStorm Force 5 Hydrastorm Cyclone BlackHawk 3-Day Assault Pack (603D00) BlackHawk Phoenix Pack (60PH00) BlackHawk Special Operations Medical Pack (60MP00) Dimensions: 15" x 5"D Cube: 300"