Patented shell release system retains the impact cap if your helmet is torn off during an incident, shielding you from heat, debris and projectilesFull brim protection with high-temperature edge trim that will not melt or dripSoft black Nomex chinstrap features one-hand quick-release buckle and postman slide for quick removal and adjustmentReplaceable and washable Nomex(R) or PBI/Kevlar(R) earlap for increased neck/ear coverage and protectionReplaceable and washable flannel, extended flannel or leather linersThree-position rear ratchet height adjust for a secure and comfortable fitFront headband adjusts so it does not interfere with SCBA mask flangeMinimal parts for lower service cost and easier maintenance