This 13 "MacBook Pro & Air Sleeve from Mujjo is made from a unique combination of 'full-grain vegetable-tanned' leather and wool-felt. The design is characterized by clean lines and visible use of premium materials. The premium leather receives a very nice 'patina' over time, a nice feature that gives the sleeve character.The felt offers your MacBook a comfortable and safe place to be stored in. Felt is a very durable and sturdy fabric that still feels soft. easy to clean and special treatment makes it water-repellent, all in all a beautiful premium sleeve for your MacBook, which becomes even more beautiful by simply using it away.