A slipper. A sneaker. A boot. Typically those are three different pairs of shoes. Obvs Adpt 3-in-1 Footwear rolls them all into one. It starts with a light compression, waterproof, merino wool-lined moccasin that's perfect for lounging and light use. It continues with a wet/dry, breathable sneaker that's ideal for everything from city wear to intense training. Combine them, and you have a boot that's warm, breathable, waterproof, and provides great traction thanks to a Vibram outsole.