1. Robust design: The semi-circular foam roller adopts a strong, high-density foam structure, which provides extra support for all body types during the stretching process without strain. 2. Fitness stimulator: The semi-circular yoga roller can help you stretch tight muscles or exercise muscles. 3. Practice stimulator: The semi-circular yoga roller has a soft non-slip grip and extra traction. When used in physical therapy exercises, it also provides additional safety. 4. High-quality semi-circular foam rollers can be used as yoga rollers, yoga bricks, balance boards, etc. 5. Easy to store: The semi-circular rollers are easy to store and carry, which is convenient for daily exercise in the gym or hotel room.