Hollis SMS75 Sidemount System - XXLG Scuba Tank Accessories Durable flat-lock seams are also

Durable flat-lock seams are also a plus

combined with the different blade edges

Internal key pocket

Anti-Reflective Coatings or “ARC” is a multi-layer metal oxide coating process applied to both sides of the UltraClear lenses

The Atomic Aquatics Frameless Mask is focused on fit

Hollis SMS75 Sidemount System - XXLG Scuba Tank Accessories Durable flat-lock seams are alsoHollis has become a leader in the sidemount market. It is not just a fad and not just a tool for cavers, it's here to stay and is growing. The SMS75 is an evolution from years of sidemount development, which started with the SMS100. Hollis has become a leader in the sidemount market. It is not just a fad and not just a tool for cavers, its here to stay and is growing. The SMS75 is an evolution from years of sidemount development, which started with