Build upper body strength with the Foam Pull Buoy. The Foam Pull Buoy immobilizes the legs to help build upper body strength and increase focus on proper hip rotation. The Foam Pull Buoy aligns the body from head to toe and improves symmetry. Comprised of an EVA foam material that will not chafe or irritate the skin. Available in Adult and Jr sizes; the Jr size is ideal for swimmers with smaller legs or under the age of 12.