Bamboo / Bamboo men's underwear. Bamboo is the new cotton. Bamboo is more environmentally friendly than cotton, an additional advantage is that it is hypoallergenic and antibacterial, so you do not suffer from allergic reactions. Bamboo underwear is cool in the summer and warm in the winter. Bamboo is breathable, absorbs moisture very well, protects against UV. Bamboo is a good alternative for people who cannot tolerate wool well.