1.EXERCISE BALL COVER For yoga ball office chair,stability ball, yoga ball chair, birth ball for pregnancy and labor, pilates ring Office, Dorm, and Home (Does not contain the ball) 2.EXQUISITE AND DURABLE Exquisite appearance and is made of good selection cotton and linen composite velvet, which is extremely durable, also it is wrinkle resistant, color resistant and shrink resistant, The shell has a zipper for easy removal and cleaning. 3.BALANCE BALL COVER Offers a touch of elegance to your workout routine. Experience superior grip, durability, and style as you enhance your balance, strength, and flexibility. 4.RELAXED BODYBUILDING Besides being a chair, the exercise ball can also be used for yoga, Pilates, abs engagement, posture workout, back stretching, stability, and physio ball balance training. Ergonomic office chair which promotes flexible joints for y lifestyle.