PROAIM-5500 is a improved lightweight front mounting, cool vest hugs and which supports the upper body, making it possible to shoot with DV cameras for long period videography. The PROAIM-5500 vest completely eliminates the stress and lets you concentrate on your shooting instead of your discomfort.The purpose of the vest is to comfortably distribute the weight of the camera and stabilizing system on your body. You'll spend a few minutes the first time use, you put this thing on in order to get it comfortable. Once you've tightened all the straps, you shouldn't have to change anything in further shoots (unless somebody else wears it)...