The High Speed Gear Micro Grip Belt Liner turns any 1.75" rigger belt or 2" duty belt with loop inner Velcro into a padded belt. Just take outer belt off of inner belt, apply liner, adjust the buckle and wear the same belt over layers securely and quickly. Sizes are determined by the length of loop Velcro on HSG belts, but will also match up with other brands. The Micro Grip Belt Liner is 0.25" thick, the Neoprene padding creates a "gel like comfort" and it adds a level of grip that is unlike any other belt system on the market. This is the perfect inner belt that is both comfortable but minimalist.