Calvin Klein Underwear CK Black Excite Thong in Lavender. - size L (also in ) Calvin Klein Underwear CK Black Excite Thong in Lavender. - size L (also in ) 87% polyamide 13% elastaneContrast: 79% polyamide 21% elastane. Hand wash cold. Sheer mesh fabric with contrast lace detail. CKUD-WI129. QF1975. One of the most recognizable designer names in the world, Calvin Klein exudes signature sensuality and sexuality through classic styles and minimalist designs.