The Cougar™ SCBA is designed to be a basic industrial unit that provides superior comfort for industrial needs. The silicone facepiece provides comfort, improved fit and durability, even in extreme heat or cold. Won't oxidize or react with ozone. Twenty/20+® facepiece available with five-strap head harness or Kevlar headnet; each available in 3 color-coded sizes. Classic Black facepiece available in small and standard sizes. First stage regulator has minimal moving parts, dramatically enhancing reliability while reducing maintenance costs. Choice of three low air alarms - bell, plain whistle, or warbling whistle. Second stage regulator has compact, low profile; Air Klic™ fastening system; first-breath-on; better downward vision for less chance of damage; allows attachment in any orientation; regulator holder on waist strap allows regulator to be kept in stand-by mode. Mighty-Light® backpack is lightweight, easy to use and comfortable; no tools required - no bolts or screws on harness for quick, easy disassembly and assembly.