Fuel Optics High Performance Anit-Fog Ski and Snowboard Goggles with Magnetic Quick Change Lens | Helmet Compatible with Extra Long Adjustable Stra MAGNETIC LENS CHANGING TECHNOLOGY: Ultra-wide spherical frameless design. Magnetic quick lens change system for quick and easy lens replacement and cleaning. ULTRA WIDE FRAMELESS DESIGN: Features 100% UV400 protection with triple layer foam for increased comfort and improved moisture management. CLOUD9 ANTI-FOG TECHNOLOGY: Dual-pane lenses create a thermal barrier designed to reduce fogging and optimize flow of air over inside of lens. Venting ports also aid in controlling airflow, while preventing clogging from snow and ice. HELMET COMPATIBLE STRAP: Adjustable head strap is compatible with most helmets and different head sizes for both men and women. SPHERICAL ULTRA CLEAR LENS: Advanced lens technology for excellent optical clarity and fog-free performance. VX-Vison outer lenses feature a unique coating to help prevent scratches, while ensuring distortion free vision.