The Upper Foam Pad – PRISM 2 Large is a replacement cushioning and support component designed for the large configuration of the Hollis PRISM 2 closed-circuit rebreather.
 
Positioned in the upper section of the assembly, the foam pad helps support and correctly position associated components while providing cushioning and reducing unwanted movement. It is ideal for replacing foam that has become worn, compressed, damaged, or lost during servicing.