Set Active X REVOLVE Ribbed V Sports Bra in Blue. - size M (also in S) Set Active X REVOLVE Ribbed V Sports Bra in Blue. - size M (also in S) 93% micro fiber nylon 7% spandex. Unpadded. Racer back styling. Ribbed fabric. Item not sold as a set. This item is trademarked for SCULPTFLEX fabric. Imported. SETR-WI4. 1111002-R002.