LPU-21, LPU-23, or LPA-2 life preserver - The LPU-21 was issued to US Naval non-ejection seat flight crewmembers, for instance all helicopter, patrol aircraft. The LPU-21 is a manual inflation horse-collar type life preserver requiring the user to pull a beaded handle on each waist bladder. The LPU-23 was essentially the same life preserver except had auto-inflators and was used on ejection seat aviators. The LPA-2 was the earlier/first/original version of the LPU-21. Used condition, bladders are damaged, sold for DISPLAY ONLY, not for actual use. Co2 Cylinders not included but available separately.