TUSA Ino Pro M1011S Dive Mask
The TUSA Ino Pro brings coated CrystalView optics to the compact Ino fit. It is a useful mask to consider when larger models feel bulky and you would like anti-reflective lenses in a smaller single-window design.
Features and benefits
- Compact fit: Designed around smaller face shapes while keeping a single-window view.
- UV420 and anti-reflective treatments: Add light filtering and help reduce lens-surface reflections.
- 3D SYNQ fitting ring: Allows the silicone skirt to adapt as you adjust the mask.
- Swift Buckle 3D: Makes it easy to fine-tune the strap without pulling it too tight.
- Included Freedom Film: Helps manage fogging when installed and cared for as directed.
How UV420 lens protection works
UV420 is a light-filtering treatment on the lens. It reduces the ultraviolet light passing through the glass and targets the short-wavelength violet end of visible light, around 400–420 nanometres. The number 420 refers to a wavelength, rather than a percentage of protection.
For divers and snorkellers, the benefit is reduced exposure to UV through the mask lenses while enjoying the view. This is particularly useful during surface swimming, where sunlight reflected from water adds to exposure. Protecting your eyes from UV is a sensible part of looking after them; use UV-blocking sunglasses on the boat or shore when your mask is off.
Why anti-reflective CrystalView glass helps underwater
The anti-reflective coating reduces light bouncing off the inner and outer lens surfaces. Together with CrystalView optical glass, this helps provide a clearer view with fewer distracting lens reflections when watching marine life, checking hand signals or reading instruments. UV filtering, reflection control and anti-fogging each have a different job.
How the anti-fog film works
The Ino Pro includes Freedom Film for its compact single lens. The matching replacement insert is the TA0805. Mask fog forms when warm, moist air inside the mask meets the cooler lens and condenses into tiny droplets that scatter light. Freedom Film has a hydrophilic, or water-attracting, surface that encourages moisture to spread into a thin layer instead of forming those misty droplets. This helps keep your view clearer during the dive.
Fit the film to a clean inner lens surface following the supplied instructions, and rinse the mask with fresh water after use. Oils, dirt and damage can reduce its effectiveness, so handle it carefully and avoid toothpaste, abrasive scrubbing or flame treatment on the film or coated lenses.
Technical specifications
| Brand | TUSA |
|---|---|
| Model | Ino Pro |
| Model number | M1011S |
| Lens layout | Single-window, low-volume mask |
| Lens material / treatment | Tempered CrystalView optical glass; UV420 and anti-reflective treatments |
| Skirt | Silicone; 3D SYNQ fitting ring and Freedom Dry surface |
| Buckles | Swift Buckle 3D |
| Strap | Adjustable silicone 3D anatomical split strap |
| Fit profile | Compact design for smaller face shapes |
| Included accessory | Small, one-piece Freedom Film anti-fog insert |
| Internal volume | 195 cc |
| Frame dimensions | 84 × 154 mm |
| Fitting dimensions | 105 × 120 mm |
| Mask weight | 197.5 g |
Strap comfort and adjustment
The contoured 3D silicone strap follows the curve of the back of your head. Its split shape spreads contact over a wider area, helping the mask stay comfortably in position with light strap tension.
Fit guidance
The Ino Pro is designed for smaller faces. Check the skirt seal, brow clearance and nose-pocket comfort before choosing your mask; a small fitting profile is a guide rather than a guaranteed seal.
Mask fit and specifications
| Face-fit profile | Small (TUSA 2026 skirt-fit guide) |
|---|---|
| Skirt design | 3D SYNQ fitting ring; Freedom Dry low-friction surface; rounded edge |
The fit classification follows TUSA’s 2026 skirt-fit guide. Check the seal, brow clearance and nose comfort on your own face; the fit label is a starting point.
Care and storage
Rinse your mask with fresh water after each dive or snorkel, flushing salt and sand from the buckles before adjusting them. Let it dry in the shade, then store it in a protective case away from heat, direct sunlight and coloured rubber gear that can stain the silicone.
Treat the coated glass gently: avoid toothpaste, abrasive cleaners, scrubbing and flame treatment. Follow the supplied instructions for any fitted Freedom Film. Check the skirt, strap and buckles for damage before use.

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