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TYR Fusion Aerofit Short John 2 Kneeskin Tech Suit

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Product Rating   Product Rating  219 customer reviews|77% say true to size
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Product Code: 5835

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Introducing the remarkably affordable Fusion 2 technology, with some of the most advanced aquatic engineering to ever enter a pool. It's what happens when the past and the future meet at the swim lab.


  • Turbulence Control and TYR's unique water repellent coating in order to reduce drag.
  • Fabrication Logic and Fluid Channel Dynamics for superior flow.
  • Unique, calenderized Isolated Compression technology for more glide efficiency.
  • Less drag.
  • Engineered for competition.
  • Hydrophobic construction.
  • Low-profile flatlock stitching.

Fabrication & Care

  • Suit: 80% Nylon / 20% Spandex.
  • Lining: 70% Nylon / 30% Spandex.
  • Rinse with cool tap water after each use.
  • Lay flat to dry.

For more information on technical suits, read How to Put on a Woman's Technical Suit


  • 4 star rating (219 Reviews)

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  • rating star
    By from
    on 12/11/2012
    Feels true to size

    That is the text I recieved after my daughter swam in this suit for the first time.  She is a 12 year old competitive swimmer and she normally wears the TYR Fusion 2 (regular cut) for all her regular meets and the Speedo Fastskin II Colors for her big meets.  She had been wanting to try a knee skin for a while but I did not want to spend the money.  When this went on sale, I figured why not try it.  She absolutely  loves it.  Wore it for the first time in finals for 100 fly and cut 2 seconds from her prelim time!  She said she thinks she likes it better than her Fastskin II Colors.  Very torn over which suit to wear for her next big meet.  The sale price makes this suit a no brainer.  It did fit her a little differently than the regular cut fusion.  She is 5", 97 lb, petite muscular build with wide ribcage and broad shoulders (typical butterfly frame).  Wears a 28/30 practice suit, 28 rugular cut fusion, 26 Fastskin II, and a 26 in this Fusion kneeskin.  The regular cut fusion just felt smaller to her than the kneeskin.  Can't think of any negatives.  Will definitely purchase again.  Swim Outlet delivered amazing customer service.  Ordered 4 suits, returned 2 for sizing, exchanged one for product defect and all transactions were handled within 4 business days.  Very professional and courteous.

  • rating star
    By from
    on 2/10/2010

    I bought this suit for my 13 year old daughter because she was going to Indianapolis for a big meet. We were hoping that she would drop some times and she did. She droped 9 seconds on her 200 back and 2 seconds on her 100 free. SHE LOVES IT. The quality seems real good. When she first got it and tried it on she said it was a little big. We ordered her a 26 because she wears a 28 in regular suits, so we ordered her a 24 and it was just right. The suits are supposed to fit tight so they are like your skin. If they are hard to put on then they are the right size. It does not hurt when on. I would highly recommend this suit for anybody who is trying to get there best times in a meet. This is an excellent product and price.

  • rating star
    By from
    on 2/24/2014
    Feels true to size

    The suit was great for the one meet I was able to wear it in.  SwimOutlet did a fantastic job of getting it to me quickly and before my last meet of the season.  I have never bought a tech suit before and figured I'd go for a cheap one my fist time.
    Basically the suit was awesome for about 30 minutes.  after that, I could feel it stretching out and when I took off the suit I noticed that the stitching in the straps had started to come undone.  Its not the worst thing because that stitching isn't super important but I only wore it to one meet.  
    I ordered a size down from my usual meet suits because I race in a 34 most often and the thought of a 30 sounded too daunting but if you get this suit I definitely recommend going 2 sizes down at least.  After one wear the straps stretch to my ears.  not so great

  • rating star
    By from
    on 2/10/2013
    Feels true to size

    I wore this suit to my regional swim meet. I was a little hesitant to purchase it, because I had never bought a knee skin before and I was afraid I would buy the wrong size, and that the suit might not work very well because it was so inexpensive (~$65 when I bought it). I was so happy when I dropped about 2 seconds in all of my swims! It fit well (I reccommend buying one size smaller than a normal meet suit) and I should be able to get 1-2 more uses out of it.

    Other reviews that say the suit is too thin, or tight might not understand that that is exactly the point of a tech suit. And tech suits are certainly not supposed to last more that 2-3 meets (some swimmers get a new suit for every meet!) The only reason why I am giving this suit 4 stars instead of 5 is beacuse some of the threads came undone - but they were not ones that were particularly vital to the suit's construction so they didn't get too much in the way - and for the extreme inexpensiveness of the suit - it still made it an awesome deal!

    If you are at all hesitant about this suit, don't be! I reccommend it highly.

  • rating star
    By from
    on 8/6/2013
    Feels too big

    This was the first competition suit I ordered for my 14 year old daughter who wears a size 32 swiim suit in meets.  While the size 32 in this competition suit "fit," it was definitely too large, since the suits are supposed to be very tight and compressive.  We had to return it and she ultimately was fitted for a higher level size 25 Tyr suit at a swim meet.  Next time I order, I would definitely order two of the suit on the smaller size end in order to make sure I got the right size.

  • rating star
    By from
    on 7/29/2013
    Feels too big

    Ordered 3 sizes smaller than my practice suit but by second day of 3 day masters meet the suit felt stretched out.  On the bright side, very comfortable in the water and good coverage for an older swimmer.  Still got best times.

  • rating star
    By from
    on 2/27/2012

    purchased for 12 y/o daughter who insisted she wanted a kneelength suit.  claims it felt like she was swimming with nothing on.  she swam similar times to when she wears a speedo fastskin. however,  for a 4 hour long meet, it was a bit tight in the knees and she complained about it.  she still loves the suit and looks great in it.  she's 5' 2" with a 36 inch chest and is a muscular 125 lbs. purchased a size 28 ,  same as her fastskin.

  • rating star
    By from
    on 7/14/2009
    Feels true to size

    My 13 yr old is 5'8", 160 lbs and all muscle except where she doesn't want curves yet, as "they get in the way."  We have a very hard time finding tech suits that are high enough to keep out water on entry and don't restrict blood flow at her legs. I was surprised to read the 5'3 gal has a prob with suits. We love thisTyr, the 36 fits great for regionals but we buy the 34 for champs as it does stretch out after two wears. She has dropped time when wearing this suit.

  • rating star
    By from
    on 10/27/2014
    Feels true to size

    My daughter told me that is is hard to swim breaststroke because she can't open her legs wide.

  • rating star
    By from
    on 9/23/2014
    Feels true to size

    A beginner kneeskin tech suit. I just wore it for the first time at a recent masters meet and dropped seconds off my previous best times. I went down 2 sizes from my practice suit size. I have the tank style tech suits, love them, dropped seconds with them and wanted to try the kneeskin style and not spend $500. Like I said,  I dropped even more seconds.  Definitely worth a try especially at this price point,  you won't regret the purchase.



Founded in Southern California in 1985, TYR™ has since developed a reputation for high-quality products and equipment. TYR competition swimwear and triathlon gear have been a dominant force in their respective industries. The company is also known for its TYR goggles, swim apparel, triathlon wetsuits and a wide variety of swimming equipment.

TYR was the first company to introduce a pair of goggles designed to fit a woman's face (the TYR T-72). TYR was also responsible for the famous red bathing suits featured on the hit television series "Baywatch." TYR consults with current and former athletes when developing its products. Swimmers know that TYR is a leader in swimsuits, warm-up suits, and swim training equipment. The TYR Tracer Series is one of the most advanced technical suit lines on the market. The TYR Hurricane wetsuits and the TYR Torque collections include top-of-the-line suits for the competitive swimmer.

TYR has also moved into competitive running equipment. From running shirts to shorts, its apparel is designed with the runner in mind. Built with moisture wicking fabric and antimicrobial material, TYR running apparel is designed to give the athlete the most comfortable, dry clothing on the market.

The name "TYR" is derived from the Norse god of warriors, who is said to have embodied victory and glory. Much the same can be said about the athletes who started TYR. Executive Vice President, Steve Furniss, was an Olympian who competed in the 1972 and 1976 Summer Games, and captained the 76th U.S. Olympic Swim Team.