A great sound makes these and designed to withstand the harsh conditions of the marine environment. All frame and grill sections are made of a polymer composite that is completely waterproof with a coating to protect against damage from UV rays. Cloth surrounds the body and polypropylene cones to complete the waterproof package. The tinsel leads are coated to prevent corrosion and the new updated grille covers are sure to impress. 5.25", White.