Protecto-Shield(®)Headgear The Protecto-Shield(®)is constructed from tough thermoplastic and features a ratchet or positive snap headband adjustment. The plastic browguard and vinyl sweatband prevent fluids from splashing down into the visor. The one-piece 8-1/2" x 15" injection molded shields provide a clear unobstructed view, and meets ANSI Z87.1 standard. Shields available in propionate and acetate for chemical splash protection and polycarbonate for heat and impact resistance.