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Product guide

Speedo Biofuse Mask Adult Swim Mask

The Speedo Biofuse Mask is an adult swimming mask with a curved lens, silicone skirt and adjustable split strap. Its claimed anti-fog coating and push-button adjustment suit pool or open-water use, but customer feedback is mixed on fit and water leakage.

At a glance

  • Curved lens design is claimed to provide an expanded field of view.
  • Soft, flexible silicone skirt and split strap are designed for comfort and fit.
  • Push-button mechanism allows strap adjustment.
  • Anti-fog is listed as a special feature and lens coating.
Price
£20.38Save 15%

Reference price: £23.99

Price checked: 14 Nov 2026

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Often bought together

Pros and cons

Pros

  • Curved lens design offers a wider field of view than a conventional flat-lens claim would suggest.
  • Push-button adjustment is straightforward to operate, while the split strap is intended to improve comfort.
  • Silicone is specified for both the skirt and strap.

Cons

  • Customer feedback is mixed on whether the mask stays leak-free, so a secure seal is not assured for every face.

Technical specifications

13 specifications
Identity
BrandSpeedo
ModelBiofuse Mask | Dive | Swim | Ergonomic Design | Open Water | Leak Free
Dimensions and listing details
Dimensions listed35 x 30 x 4 centimetres
Weight listed0.15 Grams
Materials and protection
Material listedLens: PC,Frame: PC,Gasket: Silicone,side clip cover: PC,Strap: Silicone,strap clip: PC
Lens coatingAnti-Fog Coating
Frame typeFull Rim
SizeOne Size
ColourBLACK
Fit and use
Sport typeSwimming
Closure typePush-Button
Fit typeRegular
Age rangeAdult

What to know before buying

  • The listing describes this as an adult Biofuse Mask and provides a one-size fit, but customer feedback on fit is mixed. The listed weight of 0.15 Grams and dimensions of 35 x 30 x 4 centimetres may not describe the mask alone, so confirm these details if they matter to your purchase.

What’s in the box

Included
  • Swim mask

Who is it for?

A good fit for

  • Swimmers looking for a mask-style fit with a curved lens and adjustable strap.
  • Buyers considering pool or open-water swimming who value a silicone skirt and anti-fog coating claim.

Less suited to

  • Anyone who needs a guaranteed leak-free fit or a precise fit across different face shapes.
Speedo Biofuse Mask Adult Swim Mask · photo 2
Additional product photo 2

Customer reviews on Amazon

3.9 / 5 · 158 ratings
  • 5 stars58%58%
  • 4 stars15%15%
  • 3 stars8%8%
  • 2 stars2%2%
  • 1 star17%17%

Customer feedback highlights comfort, quality, visibility and functionality, with some reporting use for several hours in the sea. Views on fit and leakage are mixed. For open-water use, the curved-lens design and adjustable split strap may be useful, but the feedback does not establish a dependable seal for every wearer. The rating distribution is also divided, so treat the positive comments as individual experiences rather than a guarantee.

Positive themes

  • Customers report comfort, good quality and clear visibility.
  • Some customers say the mask works well for different activities, including extended sea use.

Mixed feedback

  • Reports about leakage differ, with some customers saying it does not leak and others reporting water ingress.
  • Customer views on fit are mixed.

Frequently asked questions

Is the Speedo Biofuse Mask adjustable?

Yes. The listing describes a push-button mechanism for easy adjustment and an updated split strap.

Does it have an anti-fog coating?

Anti-fog is listed as a special feature, and the lens coating is specified as Anti-Fog Coating.

Is the mask guaranteed not to leak?

No guarantee is established by the listing. Customer feedback is mixed, with some reporting no leaks and others describing water getting in while swimming.

What materials are listed?

The listing specifies PC for the lens, frame and clips, and silicone for the gasket and strap.

Speedo Biofuse Mask Adult Swim Mask · photo 3
Additional product photo 3

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