Gruv Gear DuoStrap NeoI bought duostrap as a gift to my wife. Her bass is very heavy. After the concerts, her back and shoulder ached very much. The duostrap exceeded all expectations. Very comfortable and soft. The load is distributed evenly. Her back stopped hurting after the concerts. This is a miracle)))) After setting, you need to tighten all the screws so that they do not loosen.