Calvin Klein Calvin Klein Underwear's 'CK One' thong is cut from super soft, comfortable stretch-jersey. The elasticated, logo-woven waistband keeps them securely in place. Make a set with the matching bra. Wear it with: Anita Ko Ring, Anita Ko Ring, Jennifer Meyer Necklace. - Beige stretch-jersey - Lined at base - 80% nylon, 20% elastane; trim: 56% nylon, 31% polyester, 13% elastane; lining: 100% cotton - Machine wash