What will future Racing Suits look like for swimming?

Want to see the future of Fastskin?

Introducing Fastskin 4.0, a concept racing suit based on the year 2040. Fastskin was first launched by Speedo 20 years ago, designed to push the boundaries of innovation in the swimming world.  Fastskin 4.0 has been created by AquaLab, Speedo’s specialist research and development team.

Looking at the evolution of current swimsuits combined with forecasted technological advancements, Aqualab have designed a suit that Speedo predicts could lead to an improvement of up to 4% across sprint events by 2040.  Such improvements could see the men’s 50m freestyle record finally break through the 20-second barrier and could also see the women’s 100m Breaststroke time fall below the 60-second mark.

Here are the top 10 features of Speedo’s future suit:


Fastskin 4.0 isn’t just a tailored fit – it’s entirely customised to every muscle, micrometre, and colour preference of the athlete. Crafted with 3D scanning, AI prediction, and 3D bio-engineered printing, the suit also features customisable compression, and adaptive buoyancy cells that push what is possible in the pool to a new limit. If the suits of 2021 fit like a glove, then this suit fits like it was printed onto your body.

AI Live Coach

With AI sensors that monitor vitals and allows for live coaching of athletes mid-race, the Fastskin 4.0 will be the perfect companion for a swimmer looking to go as fast as possible by helping to correct technique and ensure they are at the right pace.

Energy Harvesting Fabric

Athletes will also be able to power these sensors as the suit is made from Energy Harvesting Fabric. Fastskin 4.0 is the suit which powers itself and by using smart yarn, it converts every race into energy which is used to power the AI system.


An in-built exoskeleton will flex for explosive power, snap and maximum amplitude. Whether reaching for the wall to secure a world record or getting a fast start off the blocks, the suit will extend and contract as necessary around the athlete’s joints and core to harness their explosive power, hip and shoulder rotation and every stroke down the length for maximum amplitude and forward movement – with no ounce of energy left behind.


This suit is not just designed to be better – it will be grown. Fastskin 4.0 is crafted with bio-engineered, genetically modified bacteria that means 80% of the suit will biodegrade once finished with. But before that, the 80% recycled material construction is created for easy disassembly, repair, and upgrades to keep it winning. And with energy harvesting fabric, this suit powers itself, converting every race into energy. 

Endless colours

Fastskin 4.0 will boast endless colourway options to allow the athlete to get the perfect mix for their personality.

Shark Skin 4.0 Boosters
Once in the water, the suit features Shark Skin 4.0 Boosters with the design and texture responding to how the swimmer moves in the water before adapting its structure to direct water off the suits and maximise propulsion from every stroke and kick.

Adaptive Smart Lock Seal

Gone are the days of battling to get yourself into your suit, thanks to an Adaptive Smart Lock Seal which helps make the suit easy to slip on and off whilst locking the body into place to give athletes total race confidence, customised compression, and full body coverage. The seals around the neck, wrist and ankles automatically tighten to your preferred calibration without the need for zips or fasteners.

Core Reactor

These in-water features are supported by a Core Reactor which will help swimmers to really cut through the water. The Core Reactor responds live to the athlete’s body position in the water and adjusts buoyancy for ultimate hydrodynamics and streamlining.

Dynamic Flow Zones

The zones replicate the surface texture of a whale’s underbelly and adapt to the flow of the water to minimise form drag and separation of water from the swimmer’s body in the curviest areas.

Team Speedo star Duncan Scott said:

“The Fastskin 4.0 is an incredibly cool concept and it’s really exciting to see the advances in technology and how they can be applied to the pool. Ever since I was a young swimmer, Speedo has been leading the way in terms of technology and it is great to know that they are always working away in the background to make sure that we have the very best suit possible. I’m quite jealous of the next generation of swimmers who will have the support of all this work. The AI Live Coach would be a complete game changer; I just hope it’s a computer’s voice and not my own Coach!”

Whilst Fastskin 4.0 is a vision of the future, Speedo is also leading the way in the present with its LZR Pure Intent and LZR Pure Valor suits. Since their launch in 2019, the suits have been responsible for 62.5% of all world records to fall in that period.

Shop the newest Speedo Fastskin here.