Abstract: A helmet cover for use with a helmet having through-holes extending thicknesswise through the helmet at predetermined positions, the helmet cover comprising a configuration to be fitted over the helmet, and a portion for closing the through-holes in the fitting region, the helmet cover being formed of a resin material.

Abstract: A helmet with a ventilating function is provided, including: a helmet shell having on an outer surface thereof a longitudinally extending outside air path configured to introduce outside air thereinto from a front air inlet thereof and discharge the same rearwardly from a rear air outlet thereof to form an outside air flow that sucks inside air remaining in the helmet shell by its negative pressure to achieve ventilation; a path defining body defining the outside air path; and a rear deflector for facilitating release of an air flow from a rear portion of the outer surface of the helmet shell, the path defining body and the rear deflector being unified in configuration.

Abstract: Sunglasses include a lens which is replaceable with an alternative one at any time, and provides such sunglasses in which frames thereof can be easily attached to and detached from the lens, and the frames can be held stably on the lens while attached thereto, and which provide a user with a good wear feeling. The sunglasses of the present invention include a lens, frames detachably mounted on the respective mounting portions of the lens; and temples attached to the respective frames. When the frames are mounted on the respective mounting portions, holding pieces of each of the frames hold therebetween the corresponding mounting portion, while an elongated protrusion and projection of each of the frames are engaged with an engagement long nick or slot and an engagement hole in the lens, respectively.