foam roller, EVA foam Roller, yoga eva foam roller, also called yoga foam roller, yoga pillar, made of good eva materials in different sizes such as 45x15cm, 30x15cm, 15x91.5cm. Red, blue, yellow and other colors are available... Blue High Density Foam Rollers 36"x6" Full Rond Superior quality high density foam roller made from EVA foam and heat sealed. Does not absorb body sweat, dirt or bacteria. Guaranteed to retain shape Use for balance training, improve dynamic strength and core strength Gym equipment, fitness equipment, body building equipment.