Hollis SMS Katana 2 Dual – Sidemount Harness System

Advanced sidemount diving with dual bladder redundancy and unmatched versatility

The Hollis SMS Katana 2 Dual is a premium sidemount harness developed in collaboration with world-renowned cave diver Edd Sorenson. Designed for technical divers who demand performance and adaptability, the Katana 2 Dual introduces Hollis’ innovative Quick Fit System (QFS), allowing tool-free adjustment to fit a wide range of body types in minutes.

This system offers a dual-bladder wing configuration ideal for wet dives where redundant buoyancy is critical. With a lift capacity of 40 lb and a rear weight capacity of 20 lb, it handles heavy gear configurations while maintaining a low-profile design for streamlined movement.

The Katana 2 Dual also supports both H- and Y-style harness configurations and is the first sidemount system engineered specifically for Closed Circuit Rebreathers (CCR), including integrated mounts for the KISS Sidewinder. A top-mounted dump valve ensures precise trim control even with heavy sidemount cylinders.

Key Features

• Quick Fit System (QFS) for fast torso height adjustment

• Dual-bladder for redundant buoyancy in technical and wet dives

• 40 lb lift capacity / 20 lb weight capacity

• Supports H- and Y-harness styles

• Top-mounted shoulder dump valve for ideal trim

• First CCR-ready sidemount system – compatible with KISS Sidewinder

• Rugged construction and two-year warranty

Why Choose the Katana 2 Dual?
The Hollis SMS Katana 2 Dual combines technical reliability, adaptability, and streamlined comfort in one advanced sidemount system. It’s the perfect choice for divers requiring redundancy, CCR compatibility, and a customizable harness for serious underwater exploration.