Emergency Escape Respirators, Ammonia; Methylamine no checkout Headgear with 4" ratchet headband Headgear with 4" ratchet headband features a speed mounting loop that will accommodate welding helmet or faceshield Quick change system designed for safe Each pad is made individually in a single mold Mouthbit respirators offer a quick and economical method to escape non IDLH emergency situations Large 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)