Apple MacBook Pro 13-inch (Retina Display). It's not leather, but shouldn't it be? My current computer got me through my undergraduate work, but I don't think it's got the gusto to get me through my graduate work. If, and only if, you have a spare MacBook lying around, perhaps you could show me how well it fits in the bag!
TopCase New Design Polar Light Series Silicone Keyboard Cover Skin for Macbook Unibody Whtie 13-Inch / Macbook Pro Aluminum Unibody 13, 15, 17-Inch with or without Retina Display / New Macbook Air 13-Inch / Wireless Keyboard with TopCase Mouse Pad (lavender Spring)
Unik Case Purple Light Blue Gradient Ombre Triangular Galore Graphic Ultra Slim Light Weight Matte Rubberized Hard Case Cover for Macbook Air 13" 13-Inch Model: A1369 and A1466 UNIK CASE http://www.amazon.com/dp/B015CZVSH6/ref=cm_sw_r_pi_dp_lURdwb0H35V2K
Kuzy - AIR 13-inch MINT GREEN Rubberized Hard Case for MacBook Air 13.3" (A1466 & A1369) (NEWEST VERSION) Shell Cover - Mint Green Kuzy http://www.amazon.com/dp/B007K0E3II/ref=cm_sw_r_pi_dp_0GGEub1AVB0JA
TopCase Faded Ombre Series Hot Blue & Purple Silicone Keyboard Cover Skin for Macbook 13" Unibody / Macbook Pro 13" 15" 17" with or without Retina Display / New Macbook Air 13" / Wireless Keyboard TOP CASE http://www.amazon.com/dp/B00SHZRIA0/ref=cm_sw_r_pi_dp_8Nm-ub02N2H8N