Hollis SMS100 BCD

At a glance

Hollis SMS100 BCD is a bcd from Hollis, rated 4.6 out of 5 and placed 6 of 39 in our bcds & wings shortlist. Its defining number is lift capacity: Approx. 100 lbs (45 kg) wing lift. It scores hardest on bench performance (93/100) and softest on value for money (48/100). The clearest advantage divers report: extremely versatile — adapts from single-tank recreational dives to full technical doubles configuration.

What the bcd actually gives you

Where it wins and where it costs you

Full review: Hollis SMS100 BCD

The Hollis SMS100 stands as one of the most versatile buoyancy control devices in technical and recreational diving, built around a modular design that allows divers to configure it for backmount, sidemount, or even travel-friendly minimalist setups. At its core is a durable, low-profile harness constructed from rugged nylon webbing paired with a stainless steel backplate, giving divers a stable, streamlined platform that resists shifting during demanding dives. The removable, air-cell bladder is designed with a horseshoe shape that wraps around the sides and bottom, providing balanced lift without the bulk of a traditional jacket-style BCD, which appeals strongly to divers who prioritize trim and hydrodynamic efficiency in the water.

What sets the SMS100 apart in the sidemount and technical diving community is its adaptability. The system can be quickly reconfigured between backmount doubles and sidemount cylinder rigging, making it a practical choice for divers who move between cave, wreck, and open-water technical dives without needing multiple dedicated units. Numerous stainless steel D-rings are strategically placed for stage bottles, lights, and other essential accessories, while the webbing harness offers extensive adjustability to accommodate different exposure suits, body types, and cylinder configurations. The weight-integrated pockets, when included in the setup, further support proper trim by allowing precise ballast placement close to the diver's center of gravity.

Built for durability in demanding environments, the Hollis SMS100 uses abrasion-resistant materials that hold up well against the rigors of cave walls, wreck penetration, and repeated equipment changes. The bladder itself is reinforced to resist punctures, and the overall system is engineered to be low-maintenance, with straightforward disassembly for cleaning, inspection, or component replacement. Divers who invest in the SMS100 often cite its balance of simplicity and functionality as a major advantage, since the harness strips away unnecessary padding and bulk in favor of a design that rewards proper weighting and trim technique, ultimately making it a trusted choice among technical divers who value control, redundancy, and long-term reliability underwater.