【Military-Grade Crushproof Structure】​​ TPU+PC composite shell for 200lbs vertical compression, exceeding traditional case standards. Defends against luggage stacking/outdoor impacts, specifically engineered to protect metal-plated frames, compatible with Dior and other luxury eyewear. 【10,000-Cycle Precision Hinge】​​ Laboratory torture-tested stainless steel dual-axis hinge withstands 230° hyper-extension. The case, tactical aesthetic (enhanced by hydrophobic coating) resists sand and grime, making it as at-home on urban commutes as Himalayan treks 【360° Nano Anti-scratch Lining】 3mm memory foam + microfiber triple layer defense system. Prevents tiny scratches from forming on Oakley Prizm coatings, Ray-Ban polarized lenses and delicate mirrors. 【200+ Frame Compatibility】 Precision engineered for Oakley Holbrook/Fuel Cell, Ray-Ban Aviator/Wayfarer, Maui Jim Ho'okipa and Avant-Garde frames. Symmetrical grooves securely hold oversized aviator-style lenses up to 150mm wide. 【Versatile Storage】 Indestructible sunglasses case does not only provide protection for glasses and sunglasses. It is also a great storage can for a variety of small items. Including pens, markers, chips, keys and loose ammunition. Also compatible with Ray-Ban Aviator, Clubmaster, Wayfarer, Hexagonal, Round, Justin, Erika, Andy, Marshal, Oval, Meteor, Octagonal, Shooter Tactical Hard Shell Sunglasses Case​, Military-Grade Crushproof & Water-Resistant Protective Case for Outdoor/Travel - Fits Ray-Ban, Oakley, Maui Jim & 200+ Premium Sunglasses