Optional Size: Less than 16 inches Relevant Models in the Sizes Below: 358*250*19 mm Models under 16 inches, such as the Honor MagicBook 15, Huawei MateBook D15, LG Gram15.6 and Apple MacBook Pro 16 Optional Size: Less than 14 inches Models in the following sizes are applicable: 325*230*20 mm Models under 14 inches are compatible with the following: RedmiBook 13, Honor MagicBook, Xiaomi notebook Air13.3, Lenovo Xiaoxin Pro13.3, Apple MacBook Air 13.3, Apple MacBook Pro 13.3, and other models.