This is a common question we get here in our dive shop.
Whilst a lot of masks are designed to fit a broad spectrum of faces, there are certain factors that will give you an exceptional fit.
Does the mask skirting give you a comfortable and water-tight seal?
The Zeagle Scope Mono Mask (Above) has a large nose-pocket, making it a good fit for divers with a larger nose! (Like Keegan)
How good is your field of view?
When you have the mask on, ask yourself, can you see clearly in every direction without the mask obscuring your vision?
The Atomic Venom Mask (left) not only looks great, but has a one-window / low volume design for unobstructed forward vision and wide viewing angles.
What volume is your mask?
Mask volume is the amount of air space inside your mask.
High volume masks generally are one-piece of tempered glass as apposed to two. They offer wide field of vision as discussed above, but can be a bit more of an effort to clear to clear.
Low-volume masks are an ideal choice for anyone who needs to conserve their breath while freediving or wants a mask that is very easy to clear. When freediving, low volume masks are ideal- this is because you need very little air to equalize them at depth.
The Hollis M3 is a good example of a low-volume mask. It fits close to the face and requires very little air to counter the effects of mask squeeze
Help! My mask keeps pulling out all my hair.
For the divers out there with long hair, a good mask strap is imperative. Silicon straps tend to rip out hair when donning and doffing your mask.
Masks like the Oceanic Shadow (above) come with a neoprene strap. This drastically reduces the pull on your hair. Other great features of this mask include generously sized silicon skirting (great for bearded divers) and is frameless- giving the user a giant field-of-vision
There is something for everyone.
No two masks are the same! If you manage to pick one up that gives you a great seal (and you like the colour) then that is the right mask for you!