Lifeguards need to ensure they are ready and able to rescue any victim when the time comes. Be sure they can with the Kiefer Easy-Grip Dive Brick. This 10lb. brick is perfect for new classes or in-service. The weight will ensure that it sits at the bottom of the pool and the blue color is perfect to use for scanning exercises to keep skills sharp. Use this brick with piece of mind as it will not damage pool bottoms.