The MSA Filter Self-Rescuer W65 are Air-Purifying Respirators for one-time escape use providing protection against toxic carbon monoxide (CO) and other gases emitted in underground mine fires or explosions. It is immediately ready for use after opening and removal from the container. It has a Latex-free mouthpiece and nose clip to reliably protect the user from contaminated ambient air. The adjustable head harness allows for a tight fit and hands-free usage. The sturdy stainless steel container is hermetically sealed, providing long-lasting protection for the respirator. Most orders shipped next business day with UPS or Purolator having 5 to 10 business day shipping and tracking.