Ski Goggles,OTG Anti-Fog Snowboard Skate Snowmoblie Interchangeable Double Layer Spherical Lens Frameless Snow Goggles Men Women Juli BNC DETACHABLE LENS SYSTEM-The detachable lens system offers spare lenses with different colors, VLTs suitable for different weather conditions and personal preference when skiing, snowboarding or other winter sports. PROFESSIONAL VENTILATION & FRAMELESS DESIGN-Designed to reduce fogging and optimizes the flowing air over the inside of the lens.ski goggles provide smooth air-flow system which brings fresh air and exhaust moisture quickly and effectively.The big, spherical, frameless lens provides a truly unobstructed & clear view of the slopes. DETACHABLE STRAP HELMET COMPATIBILITY-The extra long elastic strap for any helmet compatibility.It makes these the perfect goggles suitable for both men, women & youth. PRESCRIPTION GLASSES COMPATIBLE-Big inner space!!Fits Over the Glasses are designed to fit over most prescription glasses. Visibility first! 30 DAY MONEY BACK GURANTEE- All JULI customers enjoy 30 Day Money Back Guarantee. Customers can return and get refunded in case the purchasing is not satisfactory for any reason. You have no risk to try. Frame Material: TPU Lens type: Spherical Lens Finish: Full REVO Lens Size:6.9inches(W) x 3.8inches(H) Ventilation: Two-way channel Recommended: Skiing/Snowboarding Outer Lens Material: PC Inner Lens Material: CP Detachable Lens: Yes Detachable Strap: Yes OTG Compatible: Yes Helmet Compatible: Yes UV400 &amp; Anti-fog Protection: Yes