Premium EVA foam rollers are 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 graduate from an easier (smaller diameter) to a more difficult (larger diameter) roller * Half round roller is a great tool for ankle stretching and knee rehabilitation * Diameter refers to the width of the half-round profile * The EVA rollers are strong enough to be used by large adults and active children * Foam rollers are available in 36 and 12 lengths with either a round (circular) or half-round (semi-circular) profile * This line of rollers is available in marbled blue * The EVA foam rollers are known for their firmness and soft touch * EVA foam is durable and a premium product *