Bamboo underwear, made using our super soft bamboo fabric and a blend of spandex for added stretch. Chill Boys Bamboo Boxers and boxer briefs are the ultimate for soft relaxing comfort! The breathable bamboo fabric is naturally cool and fights odors. In addition to being the most comfortable boxers, they are also eco-friendly! Bamboo is one of the fastest-growing plants on the planet so you can feel good about feeling good.