The Mares 2XR First Stage – your go-to choice for uncompromised performance, especially in cold waters. Sturdy, compact, and remarkably simple to maintain, this first stage is designed for the diver who values dependability above all. Featuring the groundbreaking AST (Auto Sealing Technology), it ensures your equipment stays dry and functional, automatically activating with air to seal against water and contaminants. Oxygen compatible and versatile with both G5/8 and M26 connections for up to 300BAR, it's perfectly paired with the HR Second Stage for a seamless dive experience. Ideal for stage setups, the 2XR First Stage by Mares is your ticket to diving with confidence, even in the most demanding environments.

• Very simple and reliable
• Cold water use
• Sturdy and compact • Easy to clean and maintain
• AST- Auto Sealing Technology
Keeps the first stage dry. Reliability without compromise
The system is automatically activated by air
Tested with oxygen in cold temperatures and demanding environments
Patented system
• G5/8 connection, 300 BAR (DIN)
• M26 connection, 300 BAR (NITROX)
• Certified with the HR Second Stage