TYR Multisport Women's Splice Maxback Workout Bikini Top, Black, Large Our splice workout bikini top combines a muscle compression front panel with a mesh back panel for temperature regulation. The most supportive bra top on the triathlon market Breathable, moisture wicking fabric. Three layers of constructuon. Soft polyester compressive liner, hiden inner power mesh support and outter princess seaming w/ encapusulating propererties.