The M110 Gas Mask in this kit is designed to meet the critical hazards encountered in warfare and incorporates the highest standards in NBC protection with unrivaled comfort, reliability and wearer acceptance. Lightweight and comfortable to wear even over long periods, its low breathing resistance facilitates extended wear without adversely affecting user performance. Small silicone inner-orinasal mask provides a comfortable fit against the skin and reduces dead space to a minimum (CO2 content of the M95 mask is < 0.7%). It’s fast donning for immediate protection. (Donned and sealed in < 8 seconds.) The stretch property of the polyester/Lycra head-harness enhances wearer comfort, particularly over long periods. The head-harness is resistant to chemicals and aging.