Lace Open Crotch Thong with Side Ribbon Lace Up from Seven â  til Midnight. An added bonus on these lace boyshort wonders: open crotch and side lace-ups. Open crotch. Lace-up sides. 92% polyester. 8% spandex. 1X/2X. Size: 16-18. Cup: D/DD. Bust: 40â  -46â  . Waist: 36â  -38â  . Hip: 42â  -48â  .