Hollis SMS75 sidemount system showing the harness and wing
HT_SMS75_front.jpg
HT_SMS75_3qtr.jpg
Hollis SMS75 sidemount system showing the harness and wing
HT_SMS75_front.jpg
HT_SMS75_3qtr.jpg

Hollis SMS75 Sidemount System

£719.95

The Hollis SMS75 combines a sidemount harness with a trapezoid-shaped wing designed to support horizontal trim. Its reversible inflator and dump assembly lets you tailor the configuration, while the included cylinder rigging kit provides the main attachment components for your sidemount cylinders.

Choose your harness size below.

Size:

The Hollis SMS75 combines a sidemount harness with a trapezoid-shaped wing designed to support horizontal trim. Its reversible inflator and dump assembly lets you tailor the configuration, while the included cylinder rigging kit provides the main attachment components for your sidemount cylinders.

Choose your harness size below.

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Fitting:

Product Overview

The Hollis SMS75 is a sidemount system designed for open-water and cave diving. Its wing places more buoyancy towards the hips to help support a horizontal diving position.

An adjustable harness, removable wing bungee and reversible inflator arrangement allow you to tailor the system to your equipment and preferences. The SMS75 also provides mounting points for suitable backmounted cylinder configurations.

Key Features

  • Trapezoid-shaped wing to support horizontal trim

  • Adjustable and removable wing bungee

  • Reversible inflator and dump assembly

  • Cylinder rigging kit included

  • Sternum strap and crotch strap included

  • Three harness sizes

Technical Specifications

  • Brand: Hollis

  • Model: SMS75

  • Configuration: Sidemount, with backmount mounting provisions

  • Bladder: Single

  • Harness sizes: SM/MD, LG/XL and XXL

  • Colour: Black

  • Backmount provisions: Single-cylinder cam-band slots and 11-inch / approximately 28cm mounting centres for banded doubles

What’s Included

  • SMS75 harness and wing

  • Inflator and dump assembly

  • Adjustable wing bungee

  • Sternum strap

  • Crotch strap

  • Cylinder rigging kit containing tank bungees, stainless steel cam bands, stainless steel bolt snaps and nylon line

Cylinders, regulators, lead weights and optional accessories are sold separately. The supplied rigging components require fitting and adjustment to your cylinders.

Compatibility & Options

Choose your harness size from the dropdown. The SMS75 comes in three sizes, with adjustable straps to refine the fit.

SM/MD — Small / Medium

  • Height: 165–183cm

  • Body weight: 55–77kg

  • Chest: 76–107cm

  • Waist: 71–97cm

LG/XL — Large / Extra Large

  • Height: 170–188cm

  • Body weight: 68–91kg

  • Chest: 91–122cm

  • Waist: 81–107cm

XXL — Extra Extra Large

  • Height: 183–196cm

  • Body weight: 86–118kg

  • Chest: 112–147cm

  • Waist: 91–117cm

These manufacturer measurements are a guide, and the ranges overlap. Consider all four measurements rather than choosing by height or weight alone. Your wetsuit, drysuit and undergarments also affect the fit. If you fall between sizes, contact us before ordering and we can help.

The SMS75 provides mounting provisions for suitable single-cylinder and banded-twinset backmount configurations. Additional mounting components may be required; ask us to check your intended setup before ordering.

Harness adjustment, cylinder rigging and weighting should match your equipment and training.

Need Some Advice?

Contact us for help selecting your size, checking cylinder compatibility or comparing the SMS75 with other sidemount systems.