The world’s most famous triathlon demands everything of an athlete’s body and gear. Our new Cosmic SL Ultimate Tri LTD shoe is inspired by the immense challenge faced by those who race—or dream of racing—in Kona, Hawaii, and it’s engineered to provide every advantage against the clock. It delivers superior efficiency and support, so you can slice through headwinds—like those that buffet Kona riders on the infamous Queen K Highway—and hit the marathon with energy to spare. The design is based on our lightest road shoe with a full carbon SLR outsole and heel lock, maximizing your ability to push and lift the pedals without your feet moving in the shoe. A large Velcro strap and oversized heel loop make it easy to get from the swim to the bike in T1. A lightweight mesh upper and soft interior allows your feet to dry quickly. And the bold graphic style, which represents the changing color of the Hawaii sun—from the deep red sunrise on the Kailua Pier to the bright yellow afternoon heat on the Energy Lab section of the run—provides extra motivation whether you’re racing, training or just dreaming of the Hawaii triathlon.