Are these authentic Oakley's?

No they are not. I've bought these exact shades from Oakley directly before and there are some immediate differences that make these knock offs. One being every there is no number etched on the bottom of the left lense. Second being the two letters on the right inside genuine fuel cells do not have those markings. Fuel cell frames are replaceable if damaged and returned. Oakley will give a MVP discount of 50% for returning the broken frames and the price is around the same price as these. If you still are considering these save the pictures they have and you can send them to Oakly and they will tell you right away if they are legit. The instructions are on the Oakley website under FAQ's.

Cordial saludo, los lentes oakley - lentes de sol polarizados para hombre, talla única, modelo fuel cell, oo9096,tienen garantía? cómo funciona

Garantía de fabricación del producto más no de la mala manipulación o uso inadecuado

Need case. Which case is recommended?

Hello, The Square O case is good for these larger models. We have some new colors coming in sometime this week so look out for some new Oakley awesomeness! EJ's Sunglasses