March 11, 2020


Our guide to prescription lenses


What's my prescription?

If you have had an eye test in the last two years, then you can refer to your previous prescription. If you think your vision has changed, or you haven't had a recent eye test, it is always best to book an eye examination with an optician to find out your current prescription.

Reading your prescription

To calculate the power, you need to take into account the two aspects of your prescription.

The cylinder (CYL) indicates the amount of lens power for astigmatism. If nothing appears in this column, either you have no astigmatism, or your astigmatism is so slight that it is not necessary to correct it with your prescription lenses.

If you don't have astigmatism (no CYL figure), your prescription will be the sphere (SPH) reading. The sphere is the main part of your prescription and will be '–' for short-sightedness (myopia) and '+' for long-sightedness (hypermetropia).

OD = Right eye
OS = Left eye

If you don't have astigmatism and your sphere falls between two of the options on offer (ends with a .25 or .75) always move down to the next available lens. For example, if your prescription is -3.75, then move down to -3.5. HUUB prescription lenses are available in .5 increments.

If you have astigmatism

At HUUB, we use a method called sphere equivalency to determine what lens to use when there is some astigmatism. If your astigmatism is over 2.00 (as indicated by the CYL value), you may need to consider a custom product for the best results.

Use the formula below to work out the required dioptre required for each eye.

OD = Right eye
OS = Left eye

Dioptre = SPH + (CYL / 2)

Please note for goggles you don't need to take into account the Axis.

Example prescription:

OD (right eye) – SPH -3.0, CYL -2.0
OS (left eye) – SPH -2.5, CYL -1.0

Lenses needed:

Right eye = -3.0 + (-2.0 / 2) = -4.0
Left eye = -2.5 + (-1.0 / 2) = -3.0

If your dioptre falls between two of the options on offer, always move down to the next available dioptre. For example, if your prescription is -3.75, then move down to -3.5. HUUB prescription lenses are available in .5 increments.

What is the highest prescription lens available?

In our prescription lenses, the highest we can do is -6.00 through to -1.50 in increments of 0.5, both for short-sighted corrections.

How do I fit my prescription lenses?

You will need to purchase the Altair Swim Goggle, plus Altair Prescription Lenses. It is really easy to change the lenses. If you are not sure how to do this, watch our 'How to change Altair lenses' video.

March 11, 2020


How to change your Altair lenses

It is really easy to change Altair lenses. If you are not sure how to do this, watch our 'How to change Altair lenses' video.

March 09, 2020


The Varman Wetsuit: Pro Level Ready

HUUB founder and owner, Dean Jackson, talks about this unique suit, designed for the leg sinker. Even though this suit is available at a mid-level price of £400, it still delivers pro-level performance and is worn by many of the elite athletes racing the World Triathlon Series.

January 09, 2020


2020: What to expect in triathlon

2020: What to expect


2019 was a standout year for several HUUB athletes most particularly Jessica Learmonth (GBR) and Georgia Taylor-Brown (GBR), who not only finished 2nd and 3rd in the WTS ranking but were also 1-2 at the Olympic test event in Tokyo.

Both Henri Schoeman (RSA) and Jonny Brownlee (GBR) claimed podiums across the WTS and Superleague. Meanwhile, on the long-distance circuit, Alistair Brownlee (GBR) debuted in Kona, and the Norwegian pair of Kristian Blummenfelt and Gustav Iden dominated the 70.3 scene with a new World Record and a World Championship title. Jetze Plat (NED) also continued his phenomenal unbeaten run in the PTWC category to set him as one of the most successful para triathletes of all time.



For short course racing, the Olympics will undoubtedly be the highlight of the year with many HUUB athletes taking the trip over to Tokyo. The qualification period for the Olympic games finishes in May 2020 after Yokohama WTS meaning it is still all to play for in terms of qualification. The first three WTS races, Abu Dhabi, Bermuda and Yokohama, will be pivotal for those seeking selection so we can expect some intense racing in the early part of the year.

Tokyo will be the first time that the mixed relay will feature; this complicates selection for National Governing Bodies who will have to select their relay team from those racing the individual event. Some nations will opt to field a team focused around the super sprint format for the relay, whereas others will back those athletes racing over the Olympic distance and will hope they can double up with the relay.

HUUB athletes are set to shine in the Paralympic games with hopes lying on Jetze Plat to defend his title. George Peasgood (GBR), Jade Jones-Hall (GBR) and Joe Townsend (GBR) will also be in with a shot of a medal.

Although the Olympics will be the key focus for many athletes, the World Triathlon Series will also be of great importance. All athletes concentrating on Tokyo will need a ‘typical’ season to prepare for the games. There is a chance we might see some athletes drop away from racing after the Olympics, but the draw of a World title will still be enough to keep the racing exciting. In the Olympic downtime, athletes will also look to other formats of racing such as the Superleague and non-drafting racing. The Superleague is yet to announce all of its locations for 2020, but we can expect to see high octane racing towards the end of the season.



The long course scene will follow the same script as in previous years, but that doesn’t make it any less exciting. The three ‘big’ races - Kona IRONMAN World Championships, 70.3 IRONMAN World Championships, and Challenges The Championship will be the main aims for many long-distance athletes, alongside Continental Championships and other iconic races such as Roth and Norseman.

After the Olympic games, we will see some ITU athletes swapping their road bikes for time trial bikes and tackling half and full distance races. We know for sure that two of the most prolific ITU athletes of all time have already given the nod to Kona in 2020 after their attempt at qualifying for the Olympic Games. Alistair Brownlee and Javier Gomez (ESP) have already booked their slots for Kona after winning Western Australia IM and Malaysia IM late in 2019. The pair will have a tough ask to try and pull off a never seen before double, and some think the task is nye on impossible with such vast differences needed in training for both events.

Daniela Ryf (SUI) will be keen to take back her crown after a below-par performance in 2019, and the men’s race will arguably be the most competitive yet. The 70.3 World Championships will also feature in many athletes’ calendars as it proves to be the perfect middle-ground for ITU athletes wanting to test their feet at long-distance racing, as we saw in Nice 2019 with a win by Gustav Iden.

December 17, 2019


Introducing the Anemoi Aero Tri Suit

HUUB’s Dean Jackson and Dan Bigham (Aerodynamicist & 10x British Champion) talk about the Anemoi project which has resulted in a truly aerodynamic and effective time-saving product.

October 10, 2019


The Ironwar: 30 years on

Thirty years ago, at the Ironman World Championships, Dave Scott and Mark Allen had an epic battle. Most people know the peripheral story, but no one knows the details of each of their lives in the year-long buildup to this race, or the real race story.

In recognition of the 30th anniversary of the historic race, Dave Scott and Mark Allen have collaborated on a series of ten stories with a new story released every Thursday morning on the 1989TheStory website.

The series will conclude in Kona on Thursday 10th October with an exclusive live event. 6x IRONMAN World Champion Dave Scott and 6x IRONMAN World Champion Mark Allen discuss the greatest race of all time, plus Kona rookie and two-time Olympic Gold medalist Alistair Brownlee gives his thoughts.

September 17, 2019


HUUB at Swim Serpentine

Swim Serpentine

On Saturday 21 September, a record 6,000 swimmers are expected to take part in the UK's leading open water swimming festival - Children with Cancer UK Swim Serpentine. The iconic event takes place in and around the beautiful Serpentine Lake in Hyde Park, London.

The 2019 programme includes a half-mile, one mile and two-mile swims as well as a super six swim which involves taking on the challenge of swimming six miles over several waves. In addition to the rare opportunity to swim in the Serpentine Lake, the event offers heated changing rooms, dunk zone, pontoon start and finish, electronic timing, full water safety crew and hot tubs.

Introduced this year is a new programme of inspirational speakers and film screenings at the free Wellness Festival that will run alongside the mass participation swimming events.

HUUB is an official partner of Children with Cancer UK Swim Serpentine. If you are going to be there, come and see our friendly team at the event for wetsuit and fitting advice, as well as great deals on swim accessories. Please note that hire wetsuits cannot be returned on the day of the event.

September 17, 2019


Gareth Thomas takes on Ironman Wales to 'break HIV stigma'

Gareth Thomas has revealed he is HIV positive, saying he wants to "break the stigma" around the condition.

The former Wales and British Lions rugby captain said he wants to show how people with HIV are misrepresented as needing walking sticks and "close to dying".

He has also spoken about "shame" and "fear" of keeping his condition secret.

Thomas, 45, completed the Ironman triathlon in Tenby, Pembrokeshire after making the announcement - cheered on by crowds.

He finished the gruelling challenge in 12 hours and 18 minutes with high emotion along the way.

Gareth Thomas: HIV and Me will be shown on BBC One Wales on Wednesday 18 September at 21:00 BST, and on the BBC iPlayer.


September 10, 2019


Ali Brownlee on the road to the 70.3 World Champs

Alistair Brownlee familiarises himself with the climbs and descents on the IRONMAN 70.3 World Championships course​ and prepares his nutrition.

Ali Brownlee behind the scenes at the 70.3 World Champs

Alistair Brownlee at the IRONMAN 70.3 World Championship press conference in Nice, France.

Fellowship of Speed

By creating a collaborative of experts and world-class athletes, HUUB has taken product development and testing to another level; a level that has already resulted in multiple World Cup wins and world records.

Why We Test

Professor Huub Toussaint explains why we test using our exclusive 17 force plate M.A.D (Measurement of Active Drag) system, to determine the effect of wetsuits and swimwear with very high accuracy, and then combine it with years of research to produce the fastest products on the market.

Ben Dijkstra Interview

HUUB’s founder and proud owner Dean Jackson speaks to Ben Dijkstra about his triathlon plans for the 2019 season, after a frustrating 2018. Ben talks about about his fellow GB athletes, Injury, training and the future of the sport.

Ask Dave: Offside Breathing

In our second Ask Dave video, 6x IRONMAN™ Triathlon World Champion Dave Scott offers some great advice on offside breathing. We have worked closely with Dave Scott for many years, so we have asked him to part with some of his triathlon wisdom to make you faster and healthier.


The Varman Wetsuit: Pro Level Ready

HUUB founder and owner, Dean Jackson, talks about this unique suit, designed for the leg sinker. Even though this suit is available at a mid-level price of £400, it still delivers pro-level performance and is worn by many of the elite athletes racing the World Triathlon Series.

September 10, 2019


3 HUUB supported athletes in the top 5 at the IRONMAN 70.3 World Champs

The IRONMAN 70.3 World Championships were arguably the most competitive we have ever seen, including last year’s epic battle between Alistair Brownlee (GBR), Javier Gomez (ESP), and Jan Frodeno (GER) - three of the all-time greats of the sport. 

The spectacular course in Nice attracted stars from both the ITU and long course circuit and was the perfect test for both types of athletes. Alongside the PRO men and women, thousands of Age Group athletes also headed to the south of France to try and claim a World title on a somewhat unconventional championship course.


Josh Amberger (AUS) was the first of the 67 PRO men out of the water, just behind him was HUUB’s Alistair Brownlee along with a dozen or more strong swimmers. The first 15 athletes were separated by only 15 seconds, a testament to the depth and quality of the field. 

There were two distinct packs as athletes filed through transition, with some of the biggest names in long-distance racing losing a much as 3.45 to the like of Brownlee.  

Out onto the bike course there was a long procession of athletes that tackled the initially flat course, at the spearhead of that was Brownlee and Ben Kanute (USA) who both knew they would benefit from an aggressive ride.

As the course headed upwards, gaps began appearing, and this was before the main ‘climb’ of the day started. As expected, it was Brownlee who applied the pressure and eventually pulled out a gap of 45 seconds to Kanute, Rudy von Burg (USA), and Gustav Iden (NOR) - the only three athletes that looked capable of trying to stay with the double Olympic Champion. 

As the course headed back down the Col de Vence, von Burg along with Iden bridged up to Brownlee and took up the charge downhill. It was clear growing up in the area had its advantages, as he took no hesitations along the technical descent. All three athletes would enter T2 together with some sizeable gaps to those behind. With at least 3 minutes back to the next athlete and considerably more to those that could challenge on the run, it looked almost certain the three up front would contest the podium.

Similarly, as on the bike, it was Brownlee that attacked first as he put daylight into Von Burg and then Iden. By 6km Iden had made his way back up to the front and then began to apply pressure himself. Coming off the back of a 4th place finish at the WTS Grand Final (just the week before), Iden began to put time into Brownlee. It was clear his 10k speed was playing off over the 21km run compared to Brownlee who’s focus has been on getting ready for the Ironman World Championships in October.

Iden went on to run a 1.08 half marathon, an incredible time considering the challenging bike course. Brownlee finished second again as he did in 2018, with Von Burg in third. Kristian Blummenfelt (NOR) who was amongst the top 5 for nearly all the race was best of the chasers in 4th, with Sebastian Kienle overturning a 3.45 deficit on the swim to bike and run his way into fifth place.


Lucy Charles (GBR) led the way in the water and by the time she entered transition, her lead was up to one minute on the chasing pack led by Brazil’s Pamella Oliveira. 

The field was fairly strung out, but the chase pack contained some very strong athletes including four time 70.3 World Champion Daniela Ryf (SUI) as well as Holly Lawrence, also a past winner. It wasn’t long into to 90km bike that some of the chasers bridged up to Charles and as they began to climb a small pack formed including Charles, Ryf, Lawrence, Amelia Watkinson (NZ), and Imogen Simmonds (SUI).

Lawrence and Simmonds looked to be putting a lot of effort into the climb trying to break up the race, but it seemed to be playing into the hands of Ryf who was looking comfortable and in control. As the race crested the top of the Col de Vence Ryf made her move, using her strength and descending skills she began to open significant gaps on the chasers. 

Heading into T2 she had opened a gap of around 2.30 on Lawrence and 3 minutes on Simmonds. Further back Charles was handed a 5-minute drafting penalty, putting an end to her chances of a podium. 

Onto to the run and it looked like it was Ryf’s race to lose. At first Lawrence managed to claw back some time, but her challenge was short-lived as the multiple World Champion picked up her pace and stamped her authority on the race, running her way to her 5th 70.3 World title. Lawrence announced her comeback from injury with second place while Simmonds finished in 3rd. Chelsea Sodaro (USA) ran her way through to 4th with Charles suffering from her penalty in 5th.

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