Kickboard for swimming has at least one shallow depression that is formed on top surface of base, and which is at least wide and long enough to receive and help retain arm of swimmer on base

摘要

At least one shallow depression (17,19,21) is formed on the top surface of a rigid base (3), and extends from at least near the front edge (9) to at least near the back edge (11) of the base. The depression is at least wide enough and long enough to receive and help retain the arm of a swimmer on the base when the swimmer grips the front edge of the base with his hand.