Macbook Sleeve 13″ (For Bare Macbooks/No Shell) – Astrid Leather
Review: Woolnut's elegant leather sleeve for 13-inch MacBook Pro
Notebook Sleeve for Macbook Air 13 Inch 2023 in Brown Leather
Amazon.com: Laptop Sleeve + Stand Compatible with 13-13.3 inch MacBook Pro/ Air, XULIS Waterproof PU Leather Sleeve Bag Computer Protective Carrying Case with Support Frame (Brown) : Electronics
In case you wanted to know, the new MacBook Air fits inside the leather sleeve. : r/mac