The Vertical Mass allows you to honey our slab skills in Tuolumne on Sunday and meet deadlines via e-mail in Lee Vining on Monday. Details: padded computer compartment, plenty of room for paper work, side pockets for water bottle and cell phone, a zippered inside pocket and an outer pocket (with water-resistant zip). Made from the same fabric as our Critical Mass and Half-Mass bags, and lined with light-toned nylon pack cloth so you can easily view your digital world. Imported.