The ErgoWear Underwear X3D Modal Bikini is made in one of the best fibers for underwear. The new FEEL Modal line is replacing FEEL Original and adds another layer of sophistication into the ErgoWear family of luxurious underwear. Improved resistance and unmatched relaxation. Shape retention, silky feeling, and moisture-wicking properties set Modal apart from traditional pure-cotton fabrics. Fully ergonomic design.