These hoops are great for a lightweight beginner hoop! For Intermediate hoopers who are wanting to bridge the gap between the heavier PE hoops and polypro hoops. They are a standard size of 38″OD, but other sizes can be requested. Tubing is a nice and sturdy HDPE in 7/8″ OD thickness. A single push button closure allows for the hoop to safely be coiled down and connected onto itself for travel. HDPE insert will not crack.