Self: 100% nylon Lining: 100% cotton Contrast Fabric 1: 97% polyester 3% elastane Contrast Fabric 2: 80% nylon 20% elastane. Hand wash. Underwire cups. Back hook and bar closure. Adjustable shoulder straps. Back cut-out design. Thong back. Lightweight mesh fabric. TIRR-WI296. 311457. Proudly female founded, Thistle and Spire's show-stopping designs are created to make you feel your most fearless self. Based in New York City, Thistle and Spire draws inspiration from the architectural details of the Manhattan skyline and the trailblazing people who wear their pieces. Their custom embroideries, sultry cutouts and intricate strapping details are not for the faint hearted. Set the tone for your day with lingerie.