Why own a bamboo undershirt? Well, for one thing, bamboo is much softer than cotton and is naturally resistant to odors. Bamboo viscose also keeps you cool in the summer and warm in the winter. Once you try a Mr. Davis undershirt, you will never go back to cotton. Mr. Davis offers undershirts in two body cuts. The Tailored Cut is tapered at the chest and then back out around the hips and fits great on slender guys. The Traditional Cut does not taper and fits more like a normal undershirt.