Aquamira Tactical Rigger, 2 Liter, Pressurized Reservoir Backpack, Black 85412 The Tactical RIGGER hydration pack holds your Pressurized Reservoir close to your back in a versatile system with the ability to easy attach to other gear. Attach your RIGGER to an existing pack or gear and take your water with you in a portable" multi-functional system. The RIGGER features 360 degree D-Rings and stowable straps for ease in strapping to other gear or packs.