White Foam Rollers * 4 X36 Round * Perfect For Positioning Balance Postural And Muscle Re-education Spinal Stabilization Body Awareness And Coordination And Ranging And Strengthening Activities * Round Rollers Offer Progressive Exercise Sequences - User Can Move From An Easier (smaller Diameter) To A More Difficult (larger Diameter) Roller * Half Round Roller Is A Great Tool For Ankle Stretching And Knee Rehabilitation * Tufcoattm Foam Rollers Have A Coated Exterior That Is Washable And Durable