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Threo Pennington Flash Sleeved Tri Suit

now £75.00

was £125.00

Why to Buy: A well cut, flattering tri suit that delivers on both style and performance.

Available Delivery Options
UK Next Day



The Pennington Flash Sleeved Triathlon Suit - aptly named after the home of the Bolton Ironman swim start that THREO co-founder Laura has raced - combines striking graphics with a flawless fit thanks to THREO's understanding of the sport.

The team at Threo want you to love Triathlon as much as they do and they understand that feeling confident in your kit goes a long way to give you that extra boost at the start line.

The deep grey colourway is one of the most flattering around, with the bright bold sleeves and striking rear coloured panels you will stand out from the crowd. It's ideally cut with front and side panelling for optimum mobility and comfort, plus the wide grippers on the legs ensure no digging into your thighs.

Quick-drying compression fabric minimises unwanted movement to ensure you perform at your best and experience no unwanted chafing.

The Pennington Flash Sleeved Triathlon suit is designed to inspire confidence in triathlon newcomers and more experienced competitors alike. You only have to look at the list of specialist details to realise why it's proving so popular already.

Tried and tested by the THREO team - with more than 35 years racing experience between them, across everything from sprint to Ironman distance.

Size Guide

  UK Size Height Bust Hips Waist
X-Small 6-8 155-160cm / 5'1"-5'3" 79-84cm / 31-33" 86-91cm / 34-36" 61-66cm / 24-26"
Small 8-10 160-165cm / 5'3"-5'5" 84-89cm / 33-35" 91-96cm / 36-38" 66-71cm / 26-28"
Medium 10-12 165-170cm / 5'5"-5'7" 89-94cm / 35-37" 96-101cm / 38-40" 71-76cm / 28-30"
Large 12-14 173-178cm / 5'8"-5'10" 96-102cm / 38-40" 102-107cm / 40-42" 76-81cm / 30-32"

If you need XXL, please contact us as we should be able to order one for you.

Tech Spec

  • Quick drying water resistant fabric
  • Jersey lining across chest for additional support
  • Italian female-specific triathlon chamois pad
  • Technical compression fabric - helps reduce lactic acid build up, reduce muscle strain and improve performance
  • Wide thigh grippers for a flattering fit 
  • Lightweight breathable back panel adds flexibility across the shoulders
  • Covered rear pockets to fuel mid-race with no fuss
  • Easy access tigh pockets
  • Concealed inner pocket
  • Detachable race belt with easy-click poppers
  • Flatlock seams
  • UV protection



Body: 71% Polyamide / 29% Elastane with water repellent treatment

Mesh: 100% Polyester

Who's Behind It?

The dream of two female triathletes based in London, Threo has quickly become the most talked about name in UK triathlon since its creation in 2014.

How did it come about? Laura and Rhian, the two founders, recognised the shortage of really well designed triathlon kit for women. At the same time they recognised the nonsense that is the cycling/triathlon 'divide'.

So they set out to design and manufacture kit that looked beautiful and distinctive without being garish, that fits real women perfectly, and that can be used by triathletes, cyclists, runners... in fact, by anyone who loves physical activity! They've worked miracles in creating a top notch brand whilst juggling pregnancy, motherhood and maternity leave, and the products are simply some of the classiest around.

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