Size 5, equal to a US 40. This one-piece swimsuit has a square neckline, low back, and features the signature Greca border on the shoulder straps. Never worn. Medusa motif Greca border Elastic shoulder straps Square neckline Low back Outer composition: 78% Nylon, 22% Elastane Lining: 78% Nylon, 22% Elastane Fabric made using GRS-certified recycled polyester Certified recycled material made from ECONYL® regenerated nylon