Costa and Native Eyewear, the two brands of sunglasses bought a few weeks ago by Essilor International, are among the outdoor brands that will make their first appearance at the GoPro Mountain Games due to be held in Vail, Colorado, on June 5-8. Vasque will also join the pool of sponsors in connection with a trail running race. LifeProof will sponsor a slackline event. Another American brand, Fits, will act as the official sock of the Games, which are described as the largest celebration of adventure sports in the U.S. An estimated 53,000 people attended the event last year, including over 3,000 professional and amateur athletes.