Inspired by rimless fashion eyewear and driven by the need for interchangeable goggle lens technology, the I/O brings full interchangeability and a sleek rimless design aesthetic to the Spherical Series. Style and performance, perfectly integrated. Since 1965 Smith has been integrating adventure with fun, technology with style and performance with personality for those who break molds, challenge convention, and establish the next level thriving where sport meets way of life.