The Sentry is a stripped back no-nonsense goggle supplied with two lenses for changing light conditions it provides a lot of bang for your buck. Lens Specification: Fitted with: Ignitor Mirror Lens VLT 35% Category: S2 Proprietary universal lens tint designed to reduce eye fatigue while enhancing contrast & depth perception in all conditions. A versatile lens tint designed to to be used all season long Additional Lens Included: RC36 VLT 36 Category: S2 Universal lens tint combines rose & copper base tints. Improves depth perception, increases contrast & cuts glare in all conditions Carbonic-X Lens with TLT Optics Rays are not distorted when passing through the Carbonic-X Lens providing true vision Patented Regulator Adjustable Lens Ventilation means that you can customize the level amount of air flow Frame Features Medium Fit Ultra-Wide Silicone Backed Strap Quick Fit Strap Adjustment System with Clip Buckle 2-Layer, Dri Wix Face Foam Helmet Compatible Microfiber Bag Included