Built alongside the world's best long-course triathletes and tested in wind tunnels in Australia and the UK, the Light Speed React is 2XU's most aerodynamically refined trisuit to date. A 7-watt saving over the previous model. PWX medical-grade compression to fight fatigue on the run. HeiQ Smart Temp cooling technology to protect your pace in the heat.

1. Sleeved trisuit

2. Ergonomically engineered panelling with smooth, flat overlock seam finishes reduce loose or wrinkled fabrics

3. Lightweight, flexible PWX provides powerful lower body muscle support

4. HeiQ Smart Temp technology keeps you cool

5. SBR SILICONE RIDGES across arms and shoulders help 'roughen' up air flow to reduce drag

6. SBR CHANNEL spliced through sides improves aerodynamics and breathability

7. SBR SKIN LITE 160gsm stretch interlock wicks sweat away from upper body so you stay dry and cool

8. Stretch mesh underarm gusset increases swim flexibility

9. Large centre back aero pocket with dual side access as well as additional internal nutrition pockets

10. Easy access ice pocket on back neck for improve endurance performance in heat

11. Full length semi-auto lock zip for easy mid-race pit stops

12. TMF® Light Speed Tri Chamois dual layer 90 density high impact / 140 density superlight foam

13. 10" short with integrated silicone grippers and clean-cut streamlined fit

14. This garment contains recycled yarns

EXCEPTIONAL AERODYNAMICS

Wind tunnel tested across 5 prototype iterations at Silverstone (UK) and the Australian Centre for Sports Aerodynamics (SASI), the Light Speed React delivers a measured drag of 327.7 watts at 50km/h - a 7-watt saving over the our 2024 model, translating to a potential 3.5 to 5 minutes over 180km. 225gsm SBR CHANNEL fabric spliced through the sides and centre back pocket disrupts airflow to reduce drag, while flat overlock seam construction and ergonomically engineered panelling eliminate any loose or wrinkled fabric that creates resistance.

View more about our testing on the Light Speed React Trisuit.

ULTIMATE COOLING

SBR SKIN LITE stretch interlock wicks sweat away from upper body and innovative HeiQ Smart Temp technology senses any rise in body temperature, increasing the evaporation of perspiration through the fabric to keep you cooler for optimal performance.

POWERFUL & LIGHTWEIGHT SUPPORT

10 inch compression short with integrated silicone grippers is made from our pioneering lightweight, powerful PWX fabric, reducing muscle movement and preventing fatigue.

TMF® LIGHT SPEED TRI CHAMOIS

Designed for Ironman distance, the dual layer pad (a breathable 90 density 6mm foam is combined with a super light 140 density 3mm foam) leverages Skyve technology – foam shaved and shaped – and ""Free-Edge"" construction – the entire external edge of the pad is without foam, making the stitching totally flat – for optimal support and comfort.

ESSENTIAL STORAGE

Large centre back aero pocket with dual side access as well as internal nutrition pockets provide adequate secure storage for your race-day essentials.

FABRIC COMPOSITION

Upper Main Body: 82% POLYESTER / 18% SPANDEX
Sleeves and Sides: 92% POLYESTER / 8% SPANDEX
Mesh: 94% POLYESTER / 6% ELASTANE
Lower Body: 65% RECYCLED NYLON / 35% LYCRA