Full Details from Amazon.com : http://www.amazon.com/gp/product/B00HAN969Q?tag=onigi-20

13 MacBook Air Hammered Hardshell Case - Black - Hammered

Durable hardshell construction
Unique hammered texture
Easy snap-on attachment
Precision cut-outs for unobstructed access to all ports lights and buttons
Rubberized feet prevent slipping and promote air cooling