Full Details from Amazon.com : http://www.amazon.com/gp/product/B007YZGL3Y?tag=onigi-20
Manhattan Portage Macbook Air Skyline Laptop Sleeve (Black 11-Inch)
Fits 11 MacBook Air laptops
Constructed from top quality 5 mm thick neoprene
Excellent protection against shocks and spills
Low friction nature keeps devices scratch free
Reversed YKK zipper for extra water protection