NWT ANTHROPOLOGIE Twyla Seamless T-Back Bra X-Small/Small & Medium/Large. Does not include bottoms. This barely/there bra is an ideal foundation for any ensemble. Adjustable straps, pull over styling, fabric consists of polyamide and elastane. Measurements laid flat in inches: XS/Small Bra: 11.5 Back Length: 4.5 Medium/Large* Bra: 12.5 Back length 4.5