Sellstrom S31140 Medical/Laboratory White Plastic Crown/Chin Guard and Clear Anti-Fog Window Protective Faceshield with Ratchet Headgear, Made in USA Protection: this faceshield provides complete protection against chemical splashes, flying debris, dust and contaminants - chin guard and extended shield that covers the ears Chemical Resistant: acetate plastic shield provides strong chemical resistance than standard polycarbonate shields Impact Strength: shield provides high impact stength from flying debris Lightweight: comes assembled and made with lightweight polycarbonate guards, acetate window and nylon ratchet headgear for all day comfort Optical Clarity: shield bends naturally allowing for an excellent optical viewing, limited distortion