I use the Wingspan TT helmet for any and every triathlon. I love the versatility of the helmet based on the weather conditions as well as the race distance. Being able to open or close venting allows me to customize being aero while dialing in ventilation for a long, hot race. My head does not overheat at all in hot, humid races like IMTX. It is also so light that I can put the helmet on my 18 month old daughter, and she can play without it affecting her or weighing her down at all. There is a reason Rudy Project is consistently the number 1 helmet worn at Kona every year.