Emergency Escape Respirators, Ammonia; Methylamine no checkout Tinted lens reduces eye fatigue Tinted lens reduces eye fatigue and eye strain caused by blue light Available in a variety of lens options for indoor and outdoor use Rubberized eye seal provides exceptional protection against dust and other particles Adjustable headstrap improves fit and protection Can be fitted with an Rx prescription lens adapter while maintaining impact protection approval Ideal for repair applications to remove defects without damage to adjacent areas soft and flexible nose pads hold securely without pinching Wider nose clip fits a variety of facial types Silicone mouthpiece is more comfortable to wear over long periods Packed in sealable plastic bag (carrying bag sold separately 79BAG) Mouthbit respirators offer a quick and economical method to escape non IDLH emergency situations Large