CHECK THE SIZE CHART (in the image section above) Huub have worked with the Brownlee brothers to create the ultimate triathlon wetsuit for elite performance. The Brownlee brothers wanted to be able to Swim like theyre not wearing a wetsuit throughout the full stroke cycle. The second feature that they wanted from this wetsuit was to get their hips and legs as high as possible and keep them there. With this new HUUB Agilis 4:4 Wetsuit, HUUB have created a new Arms Neutral„¢ position reducing the typical maximum stretch cycle down by 50%. Your stroking style with a wetsuit can now mimic your stroking style without a wetsuit delivering Rotational Freedom„¢ never before felt €“ €œa game changer€ according to the Brownlees. New buoyancy materials deliver optimum leg lift and lower body buoyancy within regulatory rules. HUUBs exclusive +43„¢ buoyancy foam provides 43% more buoyancy than standard neoprene. Typically, wetsuit companies add extra buoyancy to the thighs and hips, but on this suit, the +43„¢ material goes past the centre of buoyancy for maximum leg lift. Thanks to the input of Alistair, Jonny and professor Huub Toussaint they are now confident in saying there is no faster wetsuit. This is what the triathlete has been waiting for, a no-compromise suit for race day. Alistair and Jonny will not sacrifice their performance for anything, so it will come as no surprise that they will not turn to a suit unless it REALLY is the very best they have ever swum in. A quote from Jack Sexty at 220triathlon.com from his review of the wetsuit - €œWe were highly impressed with the Agilis after numerous test swims. It pretty much eliminates any arm fatigue and the reasonably high levels of buoyancy will be suitable for a wide cross-section of swimmers.€ Jack goes on to say €“ €œIn terms of fulfilling this design brief, we think its undoubtedly a success as the suit provides a highly natural swimming experience€. Features: Worlds fastest wetsuit Arms Neutral„¢ exclusive and patent pending technology delivering totally unrivalled and unmatched Rotational Freedom„¢. HUUBs exclusive +43„¢ buoyancy foam delivering 43% more buoyancy than standard neoprene. Designed with The Brownlee Brothers extensive input. Highest grade neoprene. Breakaway Zipper for the fastest transitions. Pressed neck edge for comfort. Buoyancy 4:4