This is the DUI Weight and Trim System for Dry Suit Diving Holds up to 40 LBS of Weight. Can hold up to 40 lbs of weight. Available in 3 Sizes. Wear with any BC! Get the weight off your back and increase your diving comfort with the DUI Weight & Trim System. The Harness Allows you to comfortably wear up to 40 pounds and lets you adjust the weights up and down, forward and back so you can put your weights right where you want them.