How to Properly Test if a Scuba Mask Fits Your Face

Written by Mario Medarevic

Published on Diveworld.ca

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One of the most important pieces of gear in your dive kit is your scuba mask—and getting the right fit is crucial. A mask that fits well will stay sealed, stay comfortable, and allow you to fully enjoy your underwater experience without distraction.

Whether you’re a first-time buyer or upgrading your equipment, here’s how to test if a scuba mask truly fits your face.

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1. Start with the Seal Test

Before putting the strap over your head, hold the mask gently against your face. Make sure your nose is properly aligned with the nose pocket, with the base of your nose resting at the bottom of the nose piece.

Now inhale gently through your nose. A well-fitting mask will create a vacuum and stay in place—even when you let go with your hands.

Pass: The mask vacuums firmly and does not fall off.

Fail: Air leaks in or the mask slips off.

This test helps determine whether the mask skirt forms a proper seal on your face—a critical step in avoiding leaks while diving.

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2. Check the Upper Lip Seal

Next, check where the bottom of the mask skirt sits on your face. A properly fitted mask should sit just above your upper lip, not over it.

Pass: The skirt rests comfortably above your upper lip.

Fail: If it extends onto your lip or into your mouth, the mask may press uncomfortably or leak during the dive.

This detail is often overlooked but makes a significant difference in both comfort and seal integrity, especially on longer dives.

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3. Avoid Hairline Interference

Now examine the top of the mask skirt. It should sit below your hairline, making full contact with your forehead skin.

Pass: No hair caught under the skirt, and it sits clearly below the hairline.

Fail: If the skirt covers or interferes with your hairline, it may not seal properly—leading to water leakage.

Always ensure that hair, hoods, or caps are not caught under the silicone skirt, as even a few strands can break the seal.

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4. Assess Internal Width for Facial Fit

Lastly, take a look at the internal width of the mask skirt—the part that contacts your face.

Pass: The inner skirt rests gently against your cheeks without pressing tightly or feeling narrow.

Fail: If the skirt feels tight or presses uncomfortably, the mask may be too small or too narrow for your facial structure.

A mask that’s too narrow can create pressure points and make dives uncomfortable. Try several masks to find one that complements your unique face shape.

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Bonus Tip: Try It in the Water

While dry fitting is essential, the ultimate test is in-water performance. At Dive World, we offer the opportunity to try masks in our heated pool before committing to a purchase.

This hands-on testing ensures that you get a mask that fits perfectly—and performs reliably.

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Need Help Finding the Right Mask?

At Dive World, we carry a curated selection of high-quality masks for all face shapes and sizes. Our knowledgeable staff will walk you through the fitting process and help you find the perfect match.

📍 Visit us in Etobicoke
🌐 Shop Masks Online
📞 Call or message us for personalized recommendations

A clear, fog-free dive starts with the right fit.