Hollis M1 Dive Mask
The Hollis M1 combines a broad single lens with low-iron UltraClear glass, helping you see colour and detail through a clear, open window. The frameless body and pure silicone skirt keep the mask compact while providing flexible facial contact. It is a useful choice to compare for scuba diving when an uninterrupted view and a soft skirt are high on your list.
Features and benefits
- UltraClear low-iron glass: Helps reduce the green tint associated with some ordinary mask glass.
- Broad single window: Keeps the forward view free of a centre divider.
- Frameless low-volume body: Packs compactly and sits close to the face.
- Pure silicone skirt: Provides a flexible sealing edge around the cheeks and forehead.
Size and fit
Our catalogue groups the M1 with larger-face options. Compare the nose pocket, brow clearance and cheek seal rather than choosing on width alone.
Keep hair clear of the sealing edge and hold the mask gently against your face. Check even contact at the cheeks and forehead, plus comfortable access to your nose. Use light strap tension; overtightening can distort the skirt rather than correct the wrong shape. If you wear a hood, check the fit with it in place.
What’s included
One Hollis M1 Dive Mask with fitted strap in the selected configuration. A snorkel, fins and cleaning products are separate purchases unless explicitly included in a selected package.
Technical Specs
| Brand | Hollis |
|---|---|
| Model | Hollis M1 Dive Mask |
| Face fit guide | Large Face |
| Lens layout | Single Lens |
| Frame type | Frameless |
| Frame material | Silicone body; no separate rigid frame |
| Lens material | Ultra-clear low-iron glass |
| Skirt material | 100% pure silicone |
| Internal volume | Low volume |
| Strap material | Not specified in the checked exact-model information |
| Country of manufacture | Not specified in the checked exact-model information |
| Included | One Hollis M1 Dive Mask with fitted strap in the selected configuration. A snorkel, fins and cleaning products are separate purchases unless explicitly included in a selected package. |
Care and storage
Rinse the mask in fresh water after every outing, flushing salt and grit from the skirt, strap and buckles. Use mild liquid soap only where the mask manufacturer allows it, then rinse thoroughly. Dry in the shade and store with the lens protected and the skirt relaxed. Check the strap and sealing edge before use. Avoid abrasives, toothpaste and flame treatments.
For standard uncoated mask glass, TUSA TEC52 anti-fog treatment is an option when used according to the mask and treatment instructions. Confirm compatibility before applying any cleaner or defogger to a prescription lens, coating or anti-fog film.
For a separate neoprene strap cover, if you use one, we recommend Cressi Neoclean Wetsuit Wash or Revivex Wetsuit Shampoo to clean compatible neoprene. Wash that component separately according to its care label and the cleaner’s dilution instructions, then rinse thoroughly and dry in the shade. These neoprene cleaners are not a recommendation for the mask lens or a regulator assembly.
Compare more diving masks or contact our Hallam team for help choosing the right fit.










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