Plain boxer with elastic waistband. Made with TENCEL(TM) Lyocell (extracted mainly from eucalyptus) offers great comfort and is one of the most ecological fiber.Naturally soft to the touch, strong and keeping the skin cool and dry.TENCEL(TM) Lyocell allows the skin to breathe and provides a less favorable environment for bacterial growth. TENCEL(TM) is a trademark of Lenzing AG. Made in Portugal.