NWT Old Navy Tie-Shoulder Underwire Tankini Swim Top Product Details Online exclusive! Wide tie-shoulder straps. Sweetheart neckline. Removable, shaped cups, with seamed underwire and side-boning support. Smooth, quick-drying tricot, with comfortable stretch and full lining. Built-in UPF 40 sun protection; excellent UV protection accords with ASTM standard D6603. Mix or match with our women's swim bottoms, sold separately. #553035 Materials & Care recycled polyester 82%, spandex 18% Lining: 92% polyester, 8% spandex. Machine wash cold, gentle cycle, hang dry. Imported. Fit & Sizing Fitted through body. High coverage. Women's tankini swim top hits at natural waist.