PurGuard EV-101 disposable sterile cleanroom gogglesfeature an adjustable strap for the perfect fit. There is a new clip that easily allows the user to lengthen or shorten the head strap. The ultra-soft frame material and adjustable headband offer maximum wearer comfort at all times, even when wearing prescription glasses. The special ventilation design and anti-fog coating effectively prevent fogging. The tested and certified PurGuard goggles were developed for critical environments and offer optimal protection both for wearer and the environment.