Apple MacBook Pro with Retina Display (15-inch, 2014) review: Still the best higher-res laptop, but the competition is catching up - CNET
MacBook Pro (Retina, 13-inch, Early 2015) - Technical Specifications
Amazon.com: IBENZER Compatible with MacBook Pro 13 Inch Case 2015 2014 2013 end 2012 A1502 A1425, Hard Shell Case with Keyboard Cover for Old Version Apple Mac Pro Retina 13, Black, R13BK +1 A : Electronics
Apple MacBook Pro 15" (4th Gen) Dimensions & Drawings | Dimensions.com
2015 MacBook Pro with Retina Display: 15-inch vs. 13-inch