THERABAND Pro Series Exercise Ball, 26" Green Stability Trainer for 5'7"–6'1"VERSATILE STABILITY BALL FOR HOME OR GYM USE: Helps elevate workouts, posture, and core strength; perfect for yoga, Pilates, stretching, and balance exercises; go to fitness tool for everyday training DESIGNED FOR USERS 5'7" TO 6'1" TALL: This 26" (65 cm) ball offers the ideal size for most teens and adults within that height range. Its comfortable grip and slight texture help prevent slipping during movement heavy workouts or seated use PROFESSIONAL