BUYER'S GUIDE: IRONMAN TRI-SUITS

A tri-suit built specifically for long-distance is a must if you want to race in comfort.We put nine to the test

- ADAM LEITCH, KELLY STOKES

For all the talk of aerodynamics, of saving a precious watt or two on the bike, or cutting through the water with exclusive new technology, comfort is king when it comes to long-distance race suits.

Anything that you will have to potentially wear for up to 17 hours (and perhaps even beyond) simply has to feel good. There'll be plenty enough sore bits the morning after a race without the added trauma of a rubbed seam or the unmistakable pain of a chamois pad that didn't do its job.

As with any review, it's always worth remembering that every person is different. So what may be the perfect combination of all-round comfort for one triathlete may be another's worst nightmare. That's why it's a good idea to try something on in a shop or via a website that offers a returns policy - that way you'll know whether medium is medium or some kind of cruel joke!

Once you really step up in ability it's worth considering whether those extra few pounds spent are actually worth it to find those marginal gains that'll give you a few extra free seconds or minutes. That's why on this test we considered features but always weighed them up against comfort and value for money.

Not racing long-distance? Don't worry, we'll be bringing you a brilliant mix of standard short-sleeved tri-suits next issue. For now, it's on with the testing...

JARGON BUSTER

Chamois

Also known as the 'chammy', it needs to be quick-drying post swim, while providing enough padding for long-distance cycling without being too bulky for the run.

Sleeves

Sleeved suits offer more sun protection than vested options and should also improve aerodynamics, especially if they're ribbed, which has been shown to reduce drag.

Leg grippers