Nauticam Ext ring 40 w/ lock Back Inflated We have also added heliospan

We have also added heliospan lining in the torso area of the steamers

and a Venturi-Initiated Vacuum Assist (VIVA) dive/pre-dive switch prevents free flows in cold water or when used as an octopus

and pool training

seat and knees protects against shifting gear or when sitting or kneeling

Polyester is comfortable yet durable

Nauticam Ext ring 40 w/ lock Back Inflated We have also added heliospanThe Nauticam Extension Ring 40 with Lock is part of the N120 Port System and can be used to add 40mm effective length to an N120 Port setup. See Port Chart for more details on choosing the correct extension and port. Technical Specifications Depth Rating 150m Port System N120 Weight 0. 24kg Port Opening Diameter 109mm from SN A048435 and later Port Diameter Body Material Anodized Aluminum Alloy Port Material Port Coating Port Shade Material Removable