P.ball Gently loved. This colorway is from before their rebrand earlier this year. Please note the resistance band is a bit frayed from catching on the Velcro. Doesn’t impact use. Such a versatile piece of workout equipment! Use a variety of ways. Lots of Pvolve videos available on YouTube too :) What’s included: An adjustable and removable elastic strap An optional extender A hand pump and needle Doesn’t ship with instruction manual. A versatile and patented piece of equipment designed to do it all. Strengthens both your inner thighs and glutes Improves hip mobility Deepens the connection to your core Can be taken apart so that the ball and strap can be used separately Great for new members looking for an introduction to the Method's signature movements Diameter:  6.5 inches when deflated, 18-21 inches when inflated Full inflation is 18-21 inches in circumference. If ball deflates over time and no longer feels firm, re-inflate with the included pump. (The needle is in the pump handle. Make sure to dip the needle in water before inserting.) Materials:  Latex and rubber Tagging lululemon for exposure. The item you are purchasing is PVOLVE brand.