STRUT-THIS The Fitz Tank in Black. - size M (also in ) STRUT-THIS The Fitz Tank in Black. - size M (also in ) Cotton blend. Hand wash cold. Open back with tie detail. Jersey knit fabric. STRR-WM105. 111T. 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.