The Cressi A1 combines a single inclined lens with a soft silicone skirt and a lens treatment intended to help manage fogging. The downward-extending window is useful when checking your equipment or looking below you.
Features and benefits
- Inclined single-lens layout extends the downward viewing area.
- Treated tempered-glass lens helps manage condensation when used and cared for as directed.
- Double-edged upper skirt provides a flexible sealing area.
- Frame-mounted buckles sit on flexible tabs and allow one-hand strap adjustment.
- Soft nose pocket provides access for equalisation.
Technical Specs
| Specification | Details |
|---|---|
| Model | Cressi A1 |
| Lens | Single inclined tempered-glass lens |
| Lens feature | Anti-fog treatment |
| Skirt and strap | Silicone |
| Buckle attachment | Flexible tabs on the frame |
| Adjustment | One-hand strap adjustment |
Mask fit and specifications
| Lens layout | Single inclined lens |
|---|---|
| Strap design | Adjustable strap |
| Buckle adjustment | Frame-mounted buckles on flexible elastic tabs; one-hand adjustment |
Cressi A1 size chart
| Manufacturer skirt-fit guide | Between regular and wide (Cressi chart marker) |
|---|---|
| Skirt chart measurements | A: 13 cm; B: 11.8 cm (Cressi chart references) |
| Nose-area chart measurements | C: 3.6 cm; D: 4.8 cm (Cressi chart references) |
| Manufacturer nose-size scale | 4 on Cressi’s 1–5 reference scale |
Cressi’s measurements are reference points on the diagram. They describe the skirt and nose area, rather than overall frame dimensions or a guaranteed facial fit. Check the seal and nose-pocket comfort before choosing.

An anti-fog treatment does not guarantee fog-free use in every condition. Follow the supplied lens-care instructions and avoid abrasive cleaners, toothpaste or flame treatment.
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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