Brenthaven 2273101 Edge I Sleeve for Macbook (Steel Blue) Custom fit protective sleeve for your MacBook 13.3 inches/ MacBook Air Eclipse Sleeves are zero impact  made possible by Brenthavens promise to invest in Green projects that offset any impact our products have on our environment. Steel Blue ballistic nylon exterior with black ballistic nylon on the edges 4-side foam protection system Back Slip Pocket accommodates newspapers, magazines and files