Unique triangular ab wheel roller designed for a wide variety of abdominal and core workouts. Provides a full body workout – tones abs, core, torso, shoulders, and arms while increasing balance, coordination, and stamina. High-density frosted anti-skid rubber surface – comfortable and non-slip. Heavy-duty stainless steel construction – supports up to 600 lbs. Omni-direction wheels slide smoothly and silently in any direction. Perfect training equipment for any level user. More effective and more fun than traditional ab rollers.