The Guardian offers an easy to adjust buckle system. The strap
is just the right thickness to allow for a comfortable fit no
matter what depth you go to. As you go deeper, the strap will
help take up the slack. When you go shallow and everything readjusts,
so will the strap keeping you snug in your Guardian full face
mask.
We have made the buckles out of a tough, robust compound which
should give you years of use. However if a buckle does break,
it will be easy to replace. There is definitely one thing you
won't have to worry about and that is RUST. Rust is the number
one cause of replacement when using metal buckles.
Rust is the number one reason for replacing buckles.
Rust can cause a buckle to fail while diving. Buckles should
be checked before each dive especially if you are using a full
face mask that uses metal buckles.