mosiso compatible with macbook air 13 inch case 2021 2020 2019 2018 release a2337 m1 a2179 a1932 retina display touch id, plastic hard shell&keyboard cover&screen protector&storage bag, transparent mosiso including 2 matching color keyboard covers (one compatible with macbook air 13 inch 2021 2020 release model a2337 m1 a2179 and another compatible with macbook air 13 inch 2019 2018 release model a1932) & screen protector to protect your keyboard & screen against spills. the small storage bag keeps mouse and earphone well-organized. friendly note: please kindly check the model number "axxxx" on the back of the laptop before your purchase. make sure you choose the exact same model number as the listing title stated "a2337" or "a2179" or "a1932".