Hollis “SMS” sidemount systems have been designed not just with cave divers in mind, but any sidemount diver. The new SMS50 is no exception. Built for sidemount only, this kit can be used in any environment from open water to overhead. Includes an adjustable, one size fits most harness based on a minimalist design; ideal for traveling sidemounters. First of its kind harness, wing and plate in one and ready to dive out of the box.