LOVE THEM! I am very satisfied with this set. I thought it was going to be easy to use them but they are harder than they look. I use them in combination with free weights to ass resistance without having to go super heavy because I workout at home and the floor isn't made for extreme heavy weights. These work perfectly for home gym Interval training and Functional training. I'm still trying to figure out a way to attach them to my T-Bar rower. Gears are turning, I'll figure it out. ;)