SMS-75 Diving BCD – Hollis
The SMS-75 is the result of years of BCD development and a technical benchmark in sidemount diving.
Hollis has become a leader in the sidemount market. This is not just a passing trend or a tool only for cave divers—it’s here to stay and continues to grow. The SMS-75 is an evolution of sidemount development that began with the SMS 100, a product that has been widely copied and served as a technical reference for years. The lightweight SMS 50 line further expanded its popularity. Both systems laid the foundation for this new design.
While it caters strongly to cave divers, the SMS-75 is built to perform in all environments. Proper trim is essential, and the wing is designed to promote a horizontal diving position, with increased lift toward the hips where it is most needed—without requiring modifications. The SMS-75 also supports back-mounted tanks and features reversible inflator positions.
Features:
- Trapezoidal shape to promote horizontal trim
- Adjustable and removable wing harness
- Designed for cave or open water sidemount diving
- Cam slots for single tank and 11” grommets for banded doubles
- Reversible inflator and dump valve positioning
- Rigging kit included: tank bungees, stainless steel cam bands, SS bolt snaps, and nylon line
- Includes sternum strap and crotch strap
- Internal elbow placement to prevent air interference
Buoyancy Control Device (BCD):
A diving device with an inflatable bladder used to achieve neutral buoyancy underwater and positive buoyancy at the surface when needed.
