These HDPE beginner hoops are hand wrapped with rainbow grippy gaffer tape, a cloth-like tape to increase traction. Great hoop dance hoops & on-body hoops to break a sweat. Made with 3/4 OD HDPE tubing. HDPE is robust, durable, & resistant to cracking and shattering. It absorbs impact well which makes it ideal for beginner hoopers. Also, it's just the right weight to build muscle memory. Choose the right size hoop for you by measuring the length between your belly button and floor. Most common sizes are 34" - 40"