The Envelope Backpack by Mud is a lightweight essential you’ll hardly notice you’re carrying, yet it holds everything you need with ease. Handmade in Portugal from natural cork and leather, its clean design skips the wooden sides for a softer, everyday feel. With space for your laptop and the right balance of function and style, it’s ready to move with you wherever the day leads. The leather is water-resistant. If it becomes wet, allow to dry naturally without applying any external heat sources. To clean the leather and cork lining, use a soft cloth to apply a mild soap and water solution in circular motions.