Madewell Second Wave balconette bikini top. Size XS (Madewell size chart says fits a 32” bust). Features: • Square neckline. • Moderate coverage. • Light support: under-bust band. • UPF 50 sun protection. • Fabric: 82% recycled nylon / 18% elastane. • Do Well: This fabric is recycled from pre-consumer nylon waste like fishing nets, fabric scraps or carpet. From a pet and smoke free home.