
* Proper fit is crucial in assuring maximum protection. Place the mask on the head so that the top edge of the face opening is approximately 1/2" above the eyebrows. The mask should fit snug without movement on the head.
* The chin cup should be adjusted to be snug so as not to allow movement on the head or allow the mask to be pushed in closer to the jaw
* To determine the proper size required, measure the circumference of the head above the eyebrows and consult sizing charts. The product must be tried on to confirm the correct fit