The Cressi F-Dual is a single-lens frameless mask for snorkelling and diving. Its silicone skirt bonds directly to the tempered-glass window, keeping the design simple and compact.
Features and benefits
- Single tempered-glass window gives an open view without a centre divider.
- Double-feathered silicone edge provides flexible contact around the face.
- Skirt-mounted quick-adjust buckles allow small strap adjustments.
- Wide split strap spreads contact across the back of the head.
Technical Specs
| Specification | Details |
|---|---|
| Model | Cressi F-Dual |
| Lens layout | Single lens |
| Lens material | Tempered glass |
| Construction | Frameless |
| Skirt | Silicone with double-feathered edge |
| Buckles | Quick adjustment, mounted on the skirt |
Choosing your fit
Keep hair away from the sealing edge and place the mask against your face with light strap tension. Check that the skirt sits evenly around your forehead and cheeks, with comfortable room around the nose. The frame or lens should not press against your face. Visit our Hallam team if you would like help comparing shapes.
Care and storage
Rinse in fresh water after use, including the buckles, then let the mask dry in the shade. Store it in a protective case without crushing the skirt. Follow the supplied instructions for lens preparation and anti-fog treatment, especially for coated lenses. Avoid abrasive cleaners, toothpaste and flame treatment.

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