Half round roller is a great tool for ankle stretching and knee rehabilitation.
Round rollers offer progressive exercise sequences - user can graduate from an easier (smaller diameter) to a more difficult (larger diameter) roller. Cando Foam Roller - White Pe Foam - 6" X 12" - Round - Case of 36 Choose the roller that is right for you! Foam rollers are available in 48", 36", 30", 24", 18" and 12" lengths and 3", 4", 6" or 8" diameters with either a round (circular) or half-round (semi-circular) profile. Polyethylene foam rollers are perfect for positioning, balance, postural and muscle re-education, spinal stabilization, body awareness and coordination, and ranging and strengthening activities. They are also available with anti-microbial additive, in beige.