Case Star 13 Inch Classic Felt Fabric Laptop Sleeve Storage Bag Briefcase with Zipper Pocket and Handy Strap for Apple Macbook Pro 13 A1278 and Microsoft Surface Book (Black Color With Red Lining) Designed to fit your Macbook Pro 13" and Microsoft Surface Book With fleece fabric lining to provide position in stable for storage your computer out of accidental scratches. Durable felt fabric construction with handy strap. Measurements and Sizes: Exterior: 13.75" x 10" x 0.8" & Interior: 13" x 9.25" x 0.6" Slim and lightweight, have an external zipper pocket for accessory storage. It's better to let it air out by propping it open a few days before use.