This TUSA package pairs the smaller-profile Serene mask and USP-250 dry snorkel with Liberator fins and 5 mm dive boots. The mask’s small–medium fit guide is a starting point for choosing by face shape, including shoppers looking for women’s snorkelling gear.
What is included?
The standard configuration includes:
- TUSA Sport Serene Mask and Snorkel Combo.
- One pair of TUSA Liberator Fin.
- One pair of TUSA SS Dive Boot 5mm DB-0107.
Mask and snorkel features
- TUSA Serene UM-16: The rounded silicone skirt edge, 3D anatomical strap and five-position strap-angle adjustment help you fine-tune the fit.
- Lens layout: Single tempered-glass lens.
- TUSA USP-250 Hyperdry Elite: A float-operated top helps limit water entry. A silicone flex neck and mouthpiece, collection chamber and lower purge valve assist positioning and clearing.
Included fins: TUSA Liberator SF0113
A flexible side-rib base, blade-tip winglets and 3D anatomical strap support a boot-fitting fin.
Technical Specs
| Specification | Details |
|---|---|
| Mask | TUSA Serene UM-16 |
| Lens layout | Single tempered-glass lens |
| Mask fit guide | Small–medium adult fit guide |
| Snorkel | TUSA USP-250 Hyperdry Elite |
| Snorkel top | Dry top |
| Fins | TUSA Liberator SF0113 |
| Fin style | Open heel |
| Fin footwear | Dive boots required |
| Boots | TUSA DB-0107 5 mm dive boots included; select boot size separately |
Mask fit and buying as a gift
Use the mask’s fit profile as a starting guide only. Face width, cheek shape and nose clearance matter more than age or gender. Keep hair clear of the skirt and adjust the strap with light tension. Check that the mouthpiece sits naturally without strong clenching. For a gift, check the recipient’s current fit and foot size where possible, or ask our Hallam team for help before choosing.
TUSA Liberator SF0113 size guide
| Product size | Foot length guide | EU guide |
|---|---|---|
| XS/S | 22–26 cm | 35–40.5 |
| M/L | 26–30 cm | 40.5–46 |
The manufacturer labels these sizes S and ML. Older numeric conversions in the selector differ; choose the letter size using this SF0113 guide and confirm fit with your boots. Ask us if uncertain.
Try the fin with the boots you will wear. Boot thickness and sole shape change the fit. The strap should secure the boot without curling the toes or forcing the foot into the pocket. Boots are included as a separate size selection in this pack.
To measure your feet, place paper against a wall, stand with your heel gently against the wall and mark your longest toe. Measure from the wall to the mark in centimetres. Repeat for the other foot and use the longer measurement. Where a model has no foot-length chart, contact us with that measurement and your usual shoe size rather than using another fin model’s chart.
Optional extras
The following items are additional selections and are included only if you choose them:
- TUSA TA0801 Freedom Film Anti-Fog For 1-Window Masks.
- TUSA Sport Deluxe Mesh Snorkel Gear Bag – 72cm.
- Tusa Mask Strap Cover TA-5008.
Anti-fog film is shaped for particular lenses. Check the film’s listed mask compatibility and the supplied fitting instructions before applying it, especially with coated or corrective lenses.
Use, care and storage
A snorkel supplies air only while its opening is above the water. A dry top helps limit water entry but does not provide air underwater or guarantee a dry mouthpiece. Practise fitting and clearing in calm, shallow water before heading out.
Rinse the equipment in fresh water after use, including buckles, straps, snorkel valves and fin pockets. Dry in the shade before storage. Use mask-care products as directed and avoid abrasive cleaners, toothpaste or flame treatments. Inspect the mouthpiece, skirt and straps before the next swim.

TUSA TA0804 Freedom Anti-Fog Film Large Single Window Mask 