CanDo PE White Foam Roller, 4" X 36", Half Round Improve your balance, strengthen your core, and increase your flexibility with foam rollers Great to use for physical therapy, yoga, exercising, stretching, or resting Make push-ups, planks and other exercises more challenging by using round rollers Half rollers are great to use for ankle stretching and knee rehab, or as rocker balance board Available in round or half round styles, and lengths from 12" to 48"