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  • FUSION SLi Speed Suit

    Tri Suit for performance, comfort and exceptional cooling.

    Ultra lightweight Short Sleeved Tri Suit for racing. The SLi (SuperLight) Speed Suit with Aero Sleeves is the ultimate race suit that takes all conditions into account for both the age grouper and professional.

    With the suit cleverly designed to enhance the capabilities of the technical fabrics and to provide marginal gains, all which can make a difference come race day. 

    The Fusion Superwhite farbic offering extremely high sun protection and cooling properties and SuperBlack offering genuine sports compression, the combination is a super lightweight, cool, fast and comfortable Tri Suit for Ironman rcing. The original FUSION 2 x side pockets for nutrtion carrying up to 3 gels each and a newly designed aero back pocket.

    The SLi Speed Suit has been tried and tested and was first launched back in 2017 when worn by Patrick Lange Ironman World Champion 2017; 2018. It has been tweaked over the years to provide greater performance and comfort.

    Custom Printing Option available.


    • SuperBlack fabric on the legs, Made in France
    • SuperWhite fabric on the upper body, Made in Italy
    • Elastic YKK zip to front
    • Soft, elastic, fleece padding, Made in Italy
    • Free-cut tape at the ends of sleeves and legs with sublimation printed logos
    • Pockets to outer thighs for gels (up to 3 per pocket)
    • Flatlock stitching for additional comfort
    • Aero pocket on the back
    • Made in Europe at Fusion's own sewing factory.


    Legs: Woven. 71% polyamide, 29% elastane
    Stomach: Warp-knitted. 84% polyamide, 16% elastane
    Upper body: Warp-knitted 78% polyester, 22% elastane


    Free shipping on Australian orders over $100
    Free Express shipping over $200.
    30 Day Free Return (T&C's apply).


    • Wash before first use. If you add a little vinegar in the first wash, the colour will stay clearer and last longer.
    • Wash at a maximum temperature of 40° C.
    • Do not use detergent or bleach.
    • Use of detergent will limit the moisture transport of the product.
    • Hang-dry. Do not tumble-dry.
    • Be aware of sharp items, Velcro rubbing against fabric which may rip fabric and seams.

    Swim: The flexible upper provides great range of motion, and the water-repellent legs don't take on water and are fast drying due to the unique SLi fabric. 

    Bike: A snug fit and completely fold-free providing a very aerodynamically smooth surface. The white ICE fabric is actively cooling when wet, preventing body temperature from rising and keeping you cool whilst providing superior sun protecction. The sleeves feature a special aerodynamic design and fabric, while the back pocket is also streamlined in its design to stay as aero as possible.

    Run: On the legs of the suit, the material is woven to achieve genuine 4-way stretch and 10–12 mmHg sports compression that keeps muscle fatigue away. The side pockets store nutrition on the run without altering your pattern of movement. They are a game changer on raceday and designed by Fusion specifically for Triathlon! The low profile chamois ensures it doesn't get in the way on the run.

    Overall a Sleeved Tri Suit with greater performance, comfort and protection. 

    With a Custom Printing Option available, get in touch if you have a company logo, club or just want to make it your own. (We print in-house and use dye sublimation so can print on white fabric only). 

     **Please note the SLi Speed Suit is Unisex. Any questions on individual sizing please get in touch.

    Medium & Large sizes back in stock w/c 19th Feb. Pre-order for express delivery

    Customer Reviews

    Based on 44 reviews
    Mark Burke
    Awesome Suits

    Great Quality no and tear issues in the process ordering another. Nice fit and very cool on hot day.
    Fantastic Product

    Ironman suit CHECK ✅

    Ill start with the customer service,

    I enquired about this suit just 2 weeks out from my Ironman Busso race. Amanda was awesome to deal with sending me the suit to try on within 2 days. From there is was a great fit and i sent it straight back ! The suit was ready for me within the next week with prints on it and all. A couple sessions in the suit and i was ready to roll.

    Starting with the swim, super flexible and none of that unwanted stiffness in the arm pit area. Super light and fast. Minimal cushion for the private parts but thats what makes it super aero and flexi after 180 on the bike i was still surprisingly comfy. The extra pockets in the legs are super handy for extra gels and whatever needs you have along the marathon run leg. All in all im stoked with the suit and am very thankful for the help i got from fusion to get me in the suit for race start. Wont be the last time i order fusion.

    Much thanks

    Thanks Jacob! Awesome to hear the race went well and you are more than happy with our service, we apprcaite it. Thanks so much!

    Suprisingly fast and cool!

    I was suprised how quick I swam the 750m at Caloundra last weekend in my new long arm SLi Speed Suit as I wasn't pushing myself too hard, but was equally suprised how fast I was on the bike and how cool I stayed on the run. Love the pockets, comfort and feel.

    Thank you for reviewing the SLi Speed Suit and great to hear you had a fast swim and bike and stayed cool in the QLD heat!