STRUT-THIS The X-factor Bra in Black. - size XL (also in L, M, S, XS) STRUT-THIS The X-factor Bra in Black. - size XL (also in L, M, S, XS) 75% nylon 25% spandex. Machine wash. Pull-on styling. Unpadded cups. Back logo detailing. Lightweight activewear fabric. Item not sold as a set. STRR-WI110. 523BBLK. Started by two mother and daughter teams in 2011, Strut-This is a brand whose mission is to empower women of all ages to feel confident and be stylish while working out. Their quality active wear transitions effortlessly from the gym to brunch and everywhere in between.