Here are four different models in the Titles and listings.The Case you are clicking ONLY FITS for New Version MacBook Air 13 Model A 1932 late 2018-2019 and A2179 release 2020 .Please DOUBLE CHECK your model number on the BOTTOM of your MACBOOK (starting with AXXXX) to PURCHASE the CORRECT SIZE. Functions 1:The MacBook shells are made from high-quality hard plastic material. Two- piece design makes it easy to put on and take off. Functions 2: Covered with a thin coat of paint for a smooth rubberized exterior to stop fingerprints slippingscratchesdirt drops and other damages. Features1:Sleekglossy 2 piece design-easy to off and on.4 rubberized feet keeps the MacBook stable and secure.Bottom cover fully vented for heat dissipation and disbursement. Features 2:Plug your chargercable or headset without removing the case.The Apple trademark shines through the cutout.Item Dimensions:12.2x8.6x0.6 inches.