Rob Allen Trevally Frameless Mask
The Rob Allen Trevally pairs a broad single tempered-glass lens with a compact frameless body. Its soft silicone skirt provides flexible facial contact, while adjustable buckles let you settle the mask with light strap tension. Choose it if you prefer an uninterrupted window in a low-volume spearfishing mask, and compare its nose pocket and cheek seal with your current mask.
Features and benefits
- Single tempered-glass lens: Keeps the forward view uninterrupted.
- Frameless construction: Bonds the skirt to the lens without an exposed outer frame.
- Low-volume profile: Keeps the assembly close to your face.
- Soft silicone skirt: Flexes around the sealing edge.
- Adjustable buckles: Allow controlled tension changes.
Size and fit
Compare the skirt shape, nose pocket and brow clearance against your own face. A model name, colour or intended activity alone cannot confirm the seal.
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 Rob Allen Trevally Frameless 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 | Rob Allen |
|---|---|
| Model | Rob Allen Trevally Frameless Mask |
| Lens layout | Single Lens |
| Frame type | Frameless |
| Frame material | Silicone body; no separate rigid frame |
| Lens material | Tempered-glass |
| Skirt material | soft silicone |
| Buckles | Adjustable strap buckles |
| 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 Rob Allen Trevally Frameless 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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