The Rib Muscle Tee

About This Style. This piece features a crew neck, oversized fit, wide cuffs at armhole, in a ribbed texture TENCEL™ Lyocell.  Did You Know? Known for its lightness and versatility, TENCEL™ Lyocell is a man-made cellulosic fiber extracted from FSC and PEFC-certified responsible wood sources. Lenzing, the producer of TENCEL™ Lyocell, has achieved the highest rating from CanopyStyle for clean chemistry use and water recycling. Based on third-party certified lifecycle assessments, TENCEL™ Lyocell is over 50% less emissions intensive, compared to conventional lyocell.