Lone Wolf Paintball give their take on the HK Army Hostile CTS Reflex Airsoft Backpack available at their store... "The HK Army CTS Reflex Airsoft Backpack is a versatile addition to your kit offering customizability, mobility and safety. Designed primarily to safely carry your HPA Tank, the Reflex Backpack offers four different areas for the HPA tank hose to route through, interior and outer storage compartments, adjustable padded shoulder straps, cummerbund guides, and multi-functional tether points.

The modular outer storage zipper pouch can be removed and attached to the front shoulder straps to be used in a chest rig style configuration."