I frequently see threads asking about light basses by players with shoulder or back pain. I spent a fortune on light basses for that reason. I couldn't play a 7 lb bass for 15 minutes without severe shoulder pain. With the bass belt I can now play a 12 lb boat anchor all night with a smile. I bought it from a guy who used to advertise in the back pages of Bass Player. He didn't get noticed and the co. closed, but he saved my love of bass. It's basically a weight lifter's belt with a leather tongue on the front that holds a Dunlop straplock. This attaches to a recessed Dunlop straplock receiver you put in the lower body edhe of your bass. The belt supports 90% of the instruments weight. You still wear a strap, but just to keep the bass in position. Modding the bass takes 5 minutes, a drill and a 3/8" bit. I'm sure the belt can be home cooked from a weight lifter's belt. It's barely visible when worn. Some may find it uncool, I find it to be pure genius.