Skip to content

Free shipping over $50 & Free 2-Day shipping over $300!

Hollis

Hollis SMS Katana 2 Single Sidemount BC Vest

$799.95
Type
Backplate & Wing
Lift
40 lb 18.1 kg
Weight
8 lb 3.6 kg
Ditchable
Up to 20 lb 9 kg

FREE 2-day delivery is available on this item

Verified by our in-house dive instructors
60-Day Money Back Return Policy 60-Day Money
Back Return
Policy
Limited Warranty 2 year coverage Limited
Warranty 2
Year Coverage

Description



Experience the thrill of underwater exploration like never before with the remarkable Hollis SMS Katana 2 Sidemount BC Vest. This game-changing piece of gear showcases a streamlined sidemount design that enhances your underwater agility, allowing for effortless movement and positioning. The adjustable bungee system wraps snugly around you, making cylinder management a breeze while ensuring comfort and stability as you navigate through your aquatic adventures.
With a powerful 40lb lift capacity and a thoughtfully crafted wing lift design, the Katana 2 guarantees balanced lift and optimal trim, so you can focus solely on the beauty of the ocean surrounding you. Multiple D-rings allow for easy attachment of essential equipment, creating a streamlined experience that keeps everything you need within reach. And let's not forget its tough outer shell, meticulously engineered to withstand the challenges of even the most demanding diving conditions.
This innovative harness doesn't just deliver performance; it offers tailored customization through the groundbreaking Quick Fit System, crafted in collaboration with diving legend Edd Sorenson. Customize your fit in mere minutes and experience the unmatched comfort it provides. Whether you're donning a drysuit or thick undergarments, the Katana 2 can adjust to meet your needs. It truly sets a new standard for sidemount diving, making every dive a memorable adventure!

What's Included?

  • SMS Katana 2 Single Sidemount BC Vest
  • User Manual

Your Dive, Our Priority

Get support from passionate diving experts dedicated to going the extra mile for you.

  • Troubleshooting a product issue
  • Finding the right setup for your dive
  • Installing components

Product Features

Quick Fit System (QFS) One-Size-Fits-All Harness

Quick Fit System (QFS) One-Size-Fits-All Harness

Engineered for ultimate versatility, the modular harness can be easily configured into either an H-style or Y-style layout.It features rapid-adjustment straps for the torso, shoulders, and waist, allowing the rig to scale comfortably across a massive range of diver sizes without sacrificing fit.

Integrated Primary Bungee & Wing System

Integrated Primary Bungee & Wing System

The internal wing design features integrated primary bungees that dynamically pull the uppermost portion of the wing—and your tanks—upward and neatly in line with your torso. This prevents cylinders from sagging and eliminates the uncomfortable, restrictive wrapping of bungees around your back common in older sidemount designs.

Low-Profile Baffled 40 lbs Lift Wing

Low-Profile Baffled 40 lbs Lift Wing

Constructed with a tough 1000-denier Cordura nylon outer shell and a 15mm urethane internal bladder, the wing provides 40 lbs (18.1 kg) of lift. An internal baffle system prevents the over-expansion "turtle shell" effect, maintaining an exceptionally streamlined profile in tight overhead environments.

Streamlined Single Bladder Architecture

Streamlined Single Bladder Architecture

This model is optimized around a single, high-performance air cell with closed-circuit sidemount (CCR) integration capability. It sheds unnecessary weight and bulk, making it the ultimate streamlined choice for open-water and standard cave/wreck sidemount configurations where independent redundancy is not required.

Quick Fit System (QFS) One-Size-Fits-All Harness

Quick Fit System (QFS) One-Size-Fits-All Harness

Engineered for ultimate versatility, the modular harness can be easily configured into either an H-style or Y-style layout.It features rapid-adjustment straps for the torso, shoulders, and waist, allowing the rig to scale comfortably across a massive range of diver sizes without sacrificing fit.

Integrated Primary Bungee & Wing System

Integrated Primary Bungee & Wing System

The internal wing design features integrated primary bungees that dynamically pull the uppermost portion of the wing—and your tanks—upward and neatly in line with your torso. This prevents cylinders from sagging and eliminates the uncomfortable, restrictive wrapping of bungees around your back common in older sidemount designs.

Low-Profile Baffled 40 lbs Lift Wing

Low-Profile Baffled 40 lbs Lift Wing

Constructed with a tough 1000-denier Cordura nylon outer shell and a 15mm urethane internal bladder, the wing provides 40 lbs (18.1 kg) of lift. An internal baffle system prevents the over-expansion "turtle shell" effect, maintaining an exceptionally streamlined profile in tight overhead environments.

Streamlined Single Bladder Architecture

Streamlined Single Bladder Architecture

This model is optimized around a single, high-performance air cell with closed-circuit sidemount (CCR) integration capability. It sheds unnecessary weight and bulk, making it the ultimate streamlined choice for open-water and standard cave/wreck sidemount configurations where independent redundancy is not required.

Lift & Fit by Size

Select the right BCD size for your height, weight, and lift needs.

Size Lift Capacity
OSFA 40 lb 18.1 kg

Is This BCD Type Right for You?

Backplate & Wing BCD

A separate backplate, harness and interchangeable wing (air cell) sized to the lift you need.

Pros

  • Best trim and streamlining underwater
  • Fully modular — swap wings, plates and harness parts
  • Scales from recreational to technical diving

Trade-offs

  • Less surface-float support than a jacket
  • Takes more setup knowledge
  • Usually bought as separate components

Best For

Enthusiast, cold-water and tech-curious divers who want one platform that grows with them.

Compare BCD styles

Specifications

Buoyancy & Weight

Lift Capacity
40 lb 18.1 kg
Dry Weight
8 lb / 3.6 kg
Bladder Material
15mm urethane radio frequency (RF) welded seam
Weight-Integrated
Yes
Max Ditchable Weight
Up to 20 lb / 9 kg

Construction

Outer Shell
1000-Denier Cordura nylon
D-Rings
8 stainless
Dump Valves
2 — Upper left valve, Inflator pull

Tank & Wing

Tank Band
Sidemount
Inflation
Hollis power inflator
Modular System
Yes

Fit & Warranty

Sizes Available
OSFA
Fit
Unisex
Recommended For
Technical, Sidemount
Travel-Optimized
Yes
Warranty
5-year limited warranty (annual service required)

Product Details

User Guide
Shipping & Returns
  • Free standard shipping on orders over $50
  • Free 2-day shipping on orders over $300
  • Standard Ground delivery in 3–5 business days
  • Most orders process within 1 business day
  • Free returns within 60 days — buyer covers return shipping unless it's our error
  • Free return shipping on exchanges

Start a Return →

Questions? Email info@sbaquatics.com or see our full Shipping & Returns Policy.

Reviews

Frequently Asked Questions?

Can I switch the Hollis Katana 2 between an H-style and Y-style harness?

Yes. The Quick Fit System webbing layout can be easily modified by the user to be configured as either a classic "H" harness (which allows for the addition of a chest strap for extra stability) or a "Y" harness based on your personal preference.

What is the weight capacity of the built-in weight system?

The Katana 2 features a central spine weight pocket designed to hold up to 20 lbs (9.1 kg) of hard or soft ballast. This central placement helps center your ballast along your spine to achieve a flat, horizontal trim.

Does the Katana 2 support rebreather diving?

Yes. It is recognized as one of the first mainstream sidemount systems to feature integrated mounting options for closed-circuit sidemount systems (such as the KISS Sidewinder) directly on the inner wing.

How do the dump valves function on this BCD?

The BCD features a flexible dump configuration with reversible inflator and dump assemblies. It includes an innovative top pull-dump and an accessible over-the-shoulder pull dump on the left side, allowing you to vent gas smoothly without having to break your trim or reach awkwardly behind your back.

Need help choosing?

Our dive experts are here to help you find the right BCD. Contact us anytime with fit and compatibility questions.

Contact Us

My Bag

You are $50.00 away from free shipping Congratulations, you've got free shipping!