The newest member of VTAC's belt line brings both of these needs to the forefront. The VTAC Light Weight Underbelt can be wornall day and works well with your concealed carry holster as well as makesgetting kitted up easy. No need to change belts, simply place your VikingTactics Skirmish Belt over the Light Weight Underbelt and you are ready foraction. If you are a Law Enforcement officer you can replace your currentunderbelt with the VTAC LW Underbelt and still attach your duty belt as youhave in the past. The new VTAC Light-Weight Underbelt looks great and functionsperfectly no matter your job or the time of day.To determine best fit...measure your waist with a tape measure...choose the length belt that is closest to that actual waist measurement. Please do not choose the belt based on what size pants you wear. The end tab with the VTAC label on it in (see photo) allows you to open the belt up to make it "longer". It is held in place by sewn-in Velcro. See measurements below.Appx usable lengths: Med: 33"-36" LG: 37"-41" XL: 42"-45" XXL: 45"-48"Width is 1 5/8"