YAJU You can experience the same workout at home as in the gym, and exercising with your friends and family will create more joy Harmless: Sports belt doors with thick foam cushioning wheels will not harm doors or paint when used Diversified training OPTIONS: By using the door fitness belt, you can effectively train your biceps, triceps, pecs, back or other parts of the body, providing a variety of training options for people to choose from High Stability: Door straps are made of foam, ABS, these materials are designed to provide high stability and tear resistance through precise sewing Easy to install: first you should put the sports belt door through the upper door seam, close the door and fasten, then put the sports belt through it, the portable strap allows you to use at home, hotel or other places Quantity shipped: 4 pieces Product color: black Product size: black rope about 24cm long, black circle about 3.5*4.5cm