IUD aegis arm guard backstop bag birth control device buffer bulwark bumper condom contraceptive foam copyright crash helmet cushion dashboard diaphragm dodger face mask fender finger guard foot guard fuse goggles governor guard guardrail hand guard handrail hard hat helmet insulation interlock intrauterine device knee guard knuckle guard laminated glass life preserver lifeline lightning conductor lightning rod mask mudguard nose guard oral contraceptive pad padding palladium patent pessary pilot preventive prophylactic protective clothing protective umbrella rubber safeguard safety safety glass safety plug safety rail safety shoes safety switch safety valve screen seat belt shield shin guard skin spermicidal jelly spermicide sun helmet the pill umbrella windscreen windshield