The Foam Kickboard immobilizes arms to help build leg strength. Made of an EVA foam material that will not chafe or irritate the skin. Available in Sr. and Jr. sizes the Jr. size is designed to decrease stress on the shoulders and is ideal for youth and smaller swimmers. FEATURES & BENEFITS Build Leg Strength Immobilizes arms to build leg muscles Improve Kicking Technique Calls for full attention to kicking technique EVA Foam Provides durability and prevents skin irritation Multiple Sizes Jr. size is designed to decrease stress on shoulders and is ideal for swimmers ages 12 and under