The Mares X-One Bonito Snorkelling Set combines a twin-lens mask, semi-dry snorkel and adjustable X-One fins for recreational snorkelling. Choose the fin size first, then check the mask seal and mouthpiece comfort independently.
What is included?
- Bonito twin-lens mask with a silicone skirt.
- Semi-dry snorkel with splash guard, flexible lower section and purge valve.
- One pair of X-One adjustable fins.
Features and benefits
- Skirt-mounted mask buckles: provide strap adjustment while allowing the skirt to sit against the face.
- Splash-guard snorkel top: helps deflect splashes at the surface; it is not a dry-top shut-off valve.
- Silicone mouthpiece and flexible lower section: help position the snorkel comfortably.
- Lower purge valve: assists clearing water from the snorkel.
- X-One fins: an anatomical pocket, two-material blade and channel design provide a practical recreational fin.
Size and fit guide
| X-One fin size | EU shoe size | UK shoe size |
|---|---|---|
| S/M | 35–38 | 2.5–5 |
| M/L | 39–43 | 5.5–9 |
| L/XL | 44–47 | 9.5–12 |
Please check the X-One chart and the size option offered on this set. If an option is abbreviated to S, ask us to confirm the fin label before ordering. Fit the mask and fins separately; a fin size does not indicate face size.
View the Mares X-One size guide
Size charts are a guide only; individual fit varies with foot shape. Check both feet and try the fins with any socks you intend to use. The pocket should hold the foot securely without curled toes, pinching or excessive movement. If you are between sizes, ask our Hallam team for fitting help.
Technical Specs
| Specification | Details |
|---|---|
| Brand/set | Mares X-One Bonito |
| Manufacturer set code | 481093 |
| Mask | Twin lens with silicone skirt |
| Snorkel type | Semi-dry with splash guard |
| Mouthpiece | Silicone |
| Clearing | Lower purge valve |
| Fins | X-One open heel |
| Fin sizes | S/M, M/L and L/XL; check the selected option |
Getting ready to snorkel
Keep hair clear of the mask skirt and use a snug strap setting without overtightening. Practise breathing and clearing the snorkel in calm, shallow water. A semi-dry snorkel can fill when submerged and does not supply air underwater.
Care and storage
Compatible cleaning products
For standard uncoated mask glass, TUSA TEC52 anti-fog treatment is an option when permitted by the mask and treatment instructions. 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.
Rinse the mask, snorkel and fins in fresh water after each swim, removing sand from the buckles, straps and snorkel top. Allow everything to dry in the shade before storage. Use a suitable anti-fog treatment as directed and avoid abrasive cleaners, toothpaste or flame treatments. Check the skirt, mouthpiece, valves and straps before each use.






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