Yes4All Combo Yoga Stretch Strap & Spiky Masage Ball (9cm) - #1 Physical Therapist Kit 76-inch long, 1-inch wide stretch strap features strong, flexible, and elastic nylon material. 3.5-inch dia massage spiky ball is constructed of soft comfortable, phthalates free PVC Ideal for dynamic warm-up, stretching in sports & Yoga and total body massage, circuit workout Use for physical therapy, rehab, tension alleviation Easy to use and is small enough to carry around in a small bag