The I/O's intuitive quick release lens change system is tried and true, so you can switch lenses and stay out in the most demanding conditions. The spherical lens has 5X anti-fog, Smith's highest level of anti-fog technology, and TLT Optics for crystal clear vision. The I/O was the original goggle to solve the problem of what to do when changing light and weather demanded different lenses.
Quick release lens change system
Includes bright light and low light performance mirror lenses
Spherical carbonic-x lens
5X anti-fog inner lens
TLT lens technology for crystal clear vision
Patented Porex filter prevents optical distortion during changes in elevation
QuickFit strap adjustment system with clip buckle
3-layer DriWix face foam
Ultra-wide, silicone backed strap
Outrigger positioning system
The frameless design enables quick lens interchangeability and offers unparalleled peripheral vision. Each goggle in the collection includes both a bright light and low light performance mirror lens, providing clarity in any condition. The Interchangeable series represents the culmination of Smiths 50 years building, testing and refining goggles. Optimized for performance and comprised of the finest optics, materials and technology.