Find some Oakley Glasses Case, summarize them in a link, hope it would save your time. There is one made by Aluminum which is Ultra light, best for outdoor. Only have few, good luck, my friends ~

Oakley Large Carbon Fiber Vault Case

Brand: Oakley
Model: Large Carbon Fiber Vault
SKU: 07-257
Colour: Carbon Fiber
Approx Internal Dimensions : 16cm x 5.5cm

Suitable for: Antix, Crosshair, Crosshair 2.0, Dispatch, Eyepatch, Fast Jacket, Fuel Cell, Garage Rock, Gascan, Half Jacket, Hijinx, Holbrook, Inmate, Monster Dog, Pit Bull, Probation, Scalpel, Sliver, Straight Jacket, Ten, Twenty, and most standard size Oakley eyewear.