The one piece swimsuit is designed for fashion-consious swimmers. It features a hollowed-out backing. The fabric construction is 83% nylon and 17% spandex. This combination is ideal for displaying the vivid colors of a printed design. There is an elastic component near the chest area. This is designed for extra support..: 83% Nylon 17% Spandex.: Light fabric (5.01 oz/yd² (169 g/m²)).: Cut out at the back.: Elastic straps.: Runs smaller than usual piece! It's 100% Polyester, white thread color, light fabric (6.0 oz/yd² (170 g/m²)) tagless, Runs true to size. This extremely strong and durable synthetic fabric retains its shape and dries quickly. Do not dry-clean; Do not iron; Tumble dry: low heat; Do not bleach; Machine wash: cold (max 30C or 90F), gentle cycle.