Yoga roller, also known as yoga roller, or massage roller, roller bar, relaxation roller, etc. It is a long roller-shaped exercise aid made of special resin or foam, which is more suitable for yoga posture lying on the mat.
Pay attention to anti-skid when using the roller, and don't hurt your body if you can't control it. You can practice on IKU professional mat, so you won't slip and get hurt easily.