1. Sturdy: The semi-circular foam roller features a sturdy high-density foam structure that provides extra support for all body types while stretching without deformation. Fitness Promoter: The half-round yoga roller can help you stretch tight muscles or be used to build muscle. 3. Practice Promoter: The half-round yoga roller features a non-slip handle and extra traction. It also provides extra safety when used in physical therapy exercises. 4. High quality half round foam roller, can be used as yoga roller, yoga brick, balance board, etc. 5.Easy to store: The half round roller is easy to store and carry for daily exercise in the gym or hotel room. size: 30 * 7.5 cm Material: EPP color: black Package Contents: 4 * Half Round Foam Roller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.