Emergency Escape Respirators, For Acid Gases no checkout Cradle Technology™ uniformly contouring to Cradle Technology™ uniformly contouring to patella allowing knee and knee pad to work as one unit EVA foam padding for comfort and cushioning Wide flexible PVC cap provides broad area of protection including Unistrut 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