PORTAL XL: Zeal’s largest Rail Lock System goggle that provides explosive color, clarity, and contrast. Portal XL s field of vision spans the widest of ranges, and features a spherical polycarbonate lens that curves both vertically and horizontally to enhance peripheral vison. Increased lens volume creates less distortion and helps reduce glare and fogging. OTG ready, these over-the-glass goggles can be worn with or without glasses. OPTIMUM POLARIZED AUTOMATIC+ GB LENS: Photochromic lens technology automatically adjusts from a low-light grey with a 38% Visual Light Transmission (VLT), to a high visibility, deep rose with a 18% VLT for sunny conditions, while polarization heightens color, definition, and detail, making it the only lens you’ll ever need. RAIL LOCK SYSTEM (RLs): Changing goggle lenses has never been easier with a rimless frame design for unsurpassed peripheral vision and a dual sliding rail system that guides, slides, and locks your lens in place anywhere on the mountain. ANTI-FOG TECH, 100% UV PROTECTION & HELMET COMPATIBLE: Every Zeal goggle lens blocks 100% of harmful UVA/B/C rays for increased eye protection. Zeal’s Everclear Anti-Fog molecules are permanently infused into the lens material and can’t be wiped off so your vision is never compromised. Designed to be compatible with nearly every helmet on the market. INCLUDED WITH PURCHASE: Every pair of Zeal Optics RLs goggles comes in recycled packaging and includes a bonus Optimum Persimmon Sky Blue Mirror lens, a microfiber bag, and a Zeal Optics warranty card. Sport type: Snow Skiing