The Atomic ST1 Regulator + Atomic Z2 Octo + Atomic Regulator Bag Package combines a stainless steel primary regulator, a high-visibility alternate air source, and protective storage designed for durability and consistent performance. The Atomic ST1 regulator is engineered with a stainless steel first stage and precision internal components to support smooth airflow, stable breathing characteristics, and long-term corrosion resistance in a wide range of diving environments.

Paired with the Atomic Z2 octo, this package provides a reliable backup second stage featuring Atomic’s Automatic Flow Control for consistent airflow at varying depths. The included Atomic regulator bag is designed to help protect regulator components during transport and storage, reducing exposure to moisture, impact, and abrasion while keeping hoses and second stages organized.