The Warrior Evacuation Litter Pad is a variation of the 2" Astrus™ Stretcher pad made by Allen Medical Systems. The Astrus stretcher pad is used for enhanced tissue pressure management in the hospital arena. The Astrus pad has been modified to Air Force Air Evacuation specs and renamed the “Warrior Evacuation Litter Pad” aka "WELP." The WELP is
designed as an enhanced tissue pressure management litter surface for use by the D.O.D in wartime medical evacuation missions. There are two pressure relief vents built into the pad located one at each end at opposing sides.