Bali Double Support Cool Comfort Wirefree Bra (3820). The Bali Double Support Cool Comfort Wirefree Bra 3820 is Bali's bestselling bra style. Bali's signature Comfort-U Back design makes sure that the bra straps stay in place, providing the ultimate fit and comfort. Bali Double Support Cool Comfort Wirefree Bra is a seamless, soft-cup bra that features two-ply lined cups for double the support and modesty.