Power Systems Foam Roller Half-round Standard white foam rollers are economical, easy to use, and versatile Perfect for positioning, balance, postural and muscle re-education, spinal stabilization, body awareness and coordination, and ranging and strengthening activities Round rollers offer progressive exercise sequences - user can move from an easier (smaller diameter) to a more difficult (larger diameter) roller Foam rollers can be used alone or with other exercisers such as Cando exercise band, tubing, weights and balls Half round foam roller measuring 3 x 12