5.11 t Tactical Vest Cotton Canvas Performance, 16 Pockets Size Medium Found in 5.11 Tactical's Undercover garments, Uniforms, Outerwear and Tactical Apparel, the patented 5.11 Tactical Back-up Belt System™ was developed to provide an alternative location for bulky, uncomfortable equipment that you would normally carry on your duty belt. By integrating concealed carry pockets with a hook-and-loop lining, you can easily attach BBS™ pouches inside these garments. The Back-up Belt System™ has an ambidextrous design so you can quickly customize your equipment for each mission providing you an even distribution of weight.