Best Spearfishing Mask (2026): Low Volume Is the Whole Point

Why internal volume decides this

As you descend, the air inside your mask compresses. At 10 metres it is at half the volume it had at the surface, and the mask pulls hard onto your face. Left alone that becomes mask squeeze, which is genuinely unpleasant and can bruise the skin around your eyes and burst small vessels.

The fix is to exhale a little through your nose into the mask on the way down. On scuba that air is free, from a tank. On a breath-hold it is not. Every puff into the mask is air that is no longer available to your lungs, and it comes out of your dive time.

So the number that matters is how much air the mask holds. The Nano here is 83 cm³, which the maker claims is the lowest on the market. A general-purpose scuba or snorkelling mask can hold two or three times that.

Frameless is the usual way to get there. Instead of clamping the lens into a rigid plastic frame, the silicone skirt is bonded directly to the glass. That pulls the lens closer to your face, cuts weight, removes drag, and lets the mask fold flat in a pocket.

It is also why a good spearfishing mask looks small and unimpressive next to a snorkelling one. That is the feature.

Fit, and the film nobody tells you about

Fit beats every spec here. A leaking mask ruins a dive regardless of how little air it holds.

The test takes five seconds and works in a shop or at home. Hold the mask to your face without the strap, keep your hair out of the skirt, and inhale gently through your nose. It should stay put on its own for several seconds. If it drops or you feel air trickling in, it is the wrong shape for your face and no amount of strap tension will fix it.

Facial hair breaks the seal along the upper lip. A smear of silicone grease on the moustache helps, and plenty of spearos just trim a channel.

Now the thing that catches everyone. A new mask has a silicone release film left on the inside of the lens from manufacturing. Until you get it off, the mask fogs on every dive no matter how much defog you use, and people assume they bought a bad mask.

Scrub the inside of the glass hard with non-gel toothpaste and a finger or a soft cloth, rinse, and repeat several times until water sheets across the glass instead of beading. Some people burn it off with a lighter flame, which works on tempered glass but will melt the skirt if you slip. Toothpaste is slower and safer.

After that, a drop of baby shampoo or spit, rubbed round and rinsed lightly, keeps it clear.

Small things that change the dive

Black skirt over clear. A clear skirt lets light in from the sides, which throws reflections across the inside of the lens and washes out what you are looking at. Black cuts that out. It feels more enclosed at first and you stop noticing within a dive or two. All three masks here come in black for exactly this reason.

Equalise the mask early and often. Small puffs through the nose on the way down, before it starts to pull. Waiting until it hurts means spending more air than you needed to.

Strap position matters. The strap sits high on the back of the head, not across the widest part of the skull. Too low and it pulls the mask up off the top of the seal, which is the most common cause of a slow leak on a mask that fits fine on land.

Do not overtighten. A tight strap deforms the skirt and breaks the seal rather than improving it. Snug enough that it does not move, and no more.

Rinse in fresh water and dry out of the sun. UV hardens silicone, and a hard skirt stops sealing. Store it in a box rather than face down, so the skirt keeps its shape.