Hollis Sidemount Diving Systems | SMS 50, SMS 50 Sport, SMS 100,... | Authorized Hollis Online Dealer | Scuba Center has been selling quality scuba diving and snorkeling equipment since 1973. You will find a wide selection of scuba and snorkeling equipment at both our Minneapolis and Eagan, Minnesota locations.


Hollis Sidemount Diving Systems: SMS50, SMS50 Sport, SMS100,...

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Hollis Sidemount Systems and Accessories
Scuba Center is an authorized Hollis Dealer.
This is your assurance that your equipment will come with the full manufacturer's warranty.
Hollis Gear Sidemount Buoyancy Compensators | Sidemount Diving Systems | SMS 50, SMS 50 Sport, SMS 100,... Today, divers are demanding specialized product with higher technical features. Answering this request is Hollis; dive gear designed for leading divers.

Hollis brings innovation and engineering experience to the dive industry by designing the highest quality and most innovative scuba diving equipment available. Equipment designed to accommodate the beginning sport diver to the exploratory technical diver, using the most cutting edge materials and proven technologies for any condition.
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The full line of Hollis equipment is available for special order from Scuba Center.
For questions about any of these models, please contact us.
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Authorized Hollis No Limit Dealer | Shop online and at Scuba Center in Eagan, Minnesota

Hollis SMS Katana
Sidemount System

Honed by extensive testing and refinement, the Hollis SMS Katana, designed by Nick Hollis in partnership with leading cave diving instructors, is a cutting edge cave penetration tool without equal. The SMS Katana design builds on the proven SMS100 and SMS75 sidemount systems but was further streamlined to reduce drag and allow for easier movement in confined spaces providing optimal performance in the warm water cenotes and caves of northern Florida and Mexico.
Color: Black

Hollis SMS Katana Sidemount Diving System |  

Hollis SMS Katana Sidemount System Owners Guide User Guide

Hollis SMS Katana: Price: $499.95   add Hollis SMS Katana to cart
  • 35 lbs. of lift. The perfect wing size & weight for travel.

  • One size fits all ďHĒ harness

  • 3 weight pockets: two 5 lb. (2.26 kg) and one 3 lb. (1.36 kg)

  • 8 strategically placed D-rings: 2 on each shoulder strap, 1 on each hip/shoulder strap connection point and 2 rear, one left and one right, for securing main tanks or other accessories.

  • Reversible Inflator & Dump assembly

  • Primary bungees integrated into the wing to pull tanks up and away from diverís torso

  • Retainers located to avoid overhead interference

  • Rigging Kit not included

Hollis SMS 75
Sidemount System

Hollis has become a leader in the sidemount market. It is not just a fad and not just a tool for cavers, itís here to stay and is growing. The SMS75 is an evolution from years of sidemount development, which started with the SMS100. A product that has been copied, modified and a benchmark for technical sidemount for years. Even more popular has been the lightweight SMS50 line. These two have taken sidemount mainstream and the building blocks this new harness. While it will cater more to hardcore cave divers, SMS75 was created to handle all environments. Proper trim is key and the wing is designed to promote horizontal diving with increased lift towards the hips where itís needed most, and without modification. The SMS75 will also support rear mounted tanks and reversible inflator positions
Color: Black

Hollis SMS 75 Sidemount Diving System |

Hollis SMS75 Sidemount System Owners Guide User Guide

Hollis SMS75: Price: $699.95
  • Trapezoid shape to promote horizontal trim

  • Adjustable and removable wing bungee

  • Designed for cave or open water sidemount

  • Cam slots for single tank and grommets at 11Ē for banded doubles

  • Reversible Inflator & Dump assembly

  • Includes sternum strap & crotch strap

  • Inner located elbow to avoid overhead interference

  • Rugged 1000D Cordura

  • 40 lbs. / 18 kgs. lift

  • Three sizes: SM/MD, LG/XL and XXL

  • System weight 7 pounds

  • Rigging kit included:
    Tank bungees, SS Cam bands, SS Bolt snaps & nylon line


Hollis SMS 100
Expedition Harness
The Hollis SMS100 Sidemount system was designed not just with the sidemount cave divers in mind, but any diver. Whether you are a beginner, advanced or technical diver, this kit was designed for you. Suitable for sidemounting twin or single cylinders, but also for use with rebreathers or rear mounted singles. This "go anywhere" system can be used in any environment from open water to the overhead environment. Ready to dive out of the box.
Color: Black

Hollis SMS 100 | Hollis Gear Sidemount Expedition Harness 

Hollis SMS100 Sidemount system was designed not just with the sidemount cave divers in mind, but any diver. User Guide

Hollis SMS100: Price: $724.95-$899.95
  • Full visibility over your system

  • Reduces additional gear: Doubles bands / Hardware / Manifold -

  • Benefit when traveling

  • Streamlines profile and reduces drag increasing your bottom time

  • 360 Degree wing - 52 lbs Lift

  • Single or Dual wing options available

  • Centrally and uppermost located elbow to avoid interference

  • Upper/Lower cam band slots for rear mounted single tank

  • Includes elastic bungee system (removable)

Add HTS DBL Plates (pair): $19.95

SM/MD 5'2"-5'10" 120-185 28-41"
LG/XL 5'10"-6'2 180-240 41-52"
XXL 6'2"-6'5" 220+ 48-54"

Hollis Sidemount Accessories
Hollis SMS100 Weight Plate
Weight system designed for the SMS100 sidemount harness makes a perfect accessory for those with additional weight requirements. The weight plate mounts to the rear of the SMS100 single or dual via SS bookscrews included with each harness. Supports up to 18lbs of weight, 3lbs per pocket.

Hollis SMS100 Weight Plate | Item No. 208.0042

Details: Price: $69.95   add Hollis SMS100 Weight Plate to cart
  • 3lbs per pocket / 6 pockets total

  • Adjustable height via alternate grommet locations

  • Nylon Cordura for durability and abrasion resistance

  • For use with SMS100 single and dual only

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While these are excellent reference materials, in no way should this information be considered a replacement for proper training for the specific type of diving in which you plan to participate.