The XS Compact Second-Stage housing is made of durable non-corrosive hi-tech polymers, and has a dependable downstream demand valve mechanism. The flow of air is channeled to the mouthpiece by injection, creating a venturi effect enhancing the performance. The 2nd stage comes with a flow deviator that acts on the Venturi effect, with dive/pre-dive adjustment function. Large soft purge cover allows easy clearing of 2'nd stage and a comfortable silicone mouthpiece. The XS Compact Regulator comes with an long 3/8" hose, Owner's Manual and a 2 Year warranty.