HolaHatha Pilates Ring- Superior Fitness Resistance Unbreakable Magic Circle for Thigh Toning and Sculpting This 14 magic ring is intended for toning the core parts like your outer & inner thigh, upper arm, abdominal, obliques, neck and shoulder. Meanwhile, it helped your strength training and mobility of your daily workout. The main glass fiber ring is covered with high-density and non-slip foam to protect grip from sweating. Two-side pads are covered with soft but sturdy EVA foam to offer you more comfortable support. No metal inside so the weight is light as around 1.3lbs. Convenient to bring it with you no matter travel or workout. Put it in your luggage and you cant even feel its volume. Come with a drawstring nylon pouch and you could easily keep it from dust and take it anywhere you want. Strong and non-broken glass fiber guarantee. 90 days no reason replace!