Material: High quality clear and soft TPU Will not turn yellowish, deform as compare to silicon type  Precise fit without obstructing keyboard backlight Easy to clean Ultra Thin 0.1MM thickness Model: fit for MacBook Pro 13" A1278, MacBook Pro 15" A1286, MacBook Pro Retina 13" A1425 A1502, MacBook Pro Retina 15" A1382, MacBook Air 13" A1369 a1466 (not fit with any other MacBook model including the latest MacBook Pro touch bar A1706 A1707 A1708)