■ Simple to use when exercising in 1 month. Thick abdominal and bi-by: New design, double-sided design, 2 ways to use, the back side is smaller, massaging particles, reduces fatigue, and the front surface is thick massage, increases physical perception when contact; Multi-function; Improves body balance, relaxes muscles for the whole family; Exercise equipment, allows you to exercise without going out of the house; Product Specifications: SGS safety test and ROHS certification; Product Name: Exercise equipment size: Width 38. cm, 10 to 1 4.7 inches (12 cm); Color: Pink/Blue; Material: PVC; Weight: 32.9 oz (89