The BEST product on the market!.. and I've tried a few in my business. The bands don't ride up; roll up; dig in; rip; or lose their shape. They are an integral part of my strength and conditioning programs and a MUST HAVE in my outdoor training sessions! FYI I have 6 sets of the Booty Band set and looks like I'll have to order more because my outdoor training sessions are selling out before I advertise them.