For impact or splash protection, this face shield is a "must have" in your safety lineup. Protecto-Shield® Prolok® headgear is constructed of tough thermoplastic for superior heat protection and is available with ratchet or pinlock headband adjustments. Visors easily attach with no slaps, posts or levers and the headgear comes with easy sizing and tension adjustment for individual positioning and comfort. The headgear is designed with a chemical splash drip edge to prevent fluids from splashing down inside the visor.