The Chill-Its 6670CT Evaporative Cooling Hard Hat Neck Shade straps into hard hats to deliver four hours of cooling relief while also shading the neck from sun damage. The lightweight shade features advanced PVA cooling technology for instant cooling without bulk or slime, with a wide panel that extends down for complete back-of-neck-coverage. This hard hat neck shade fits most hard hats and safety helmets, easily and securely attaching to the suspension with two hook & loop straps. </p