Alpha 2 Double Expansion Travel Satchel Black D-2. TUMI elevates your travel experience with Alpha 2— the pinnacle of our design innovation, engineering, functionality and performance. This exceptional strong travel satchel, made from TUMI's signature FXT ballistic nylon®, offers an impressive 13of expanded depth to maximize your packing capacity when you need it most. A generous front pocket allows you quick and easy access to key essentials on the go. It's the one to grab for long weekends.