Y 3 Green Nylon One Piece Swimsuit Y 3 St??ssy Black Nylon One Piece Swimsuit Stussy MOW Classic One Piece Swimsuit for Women Lapis Balenciaga Black Nylon One Piece Swimsuit Balenciaga JADE Swim Womens Cut Out Nylon One Piece Swimsuit Walmart.com. The nylon One piece swimsuit by Ami Paris features an essential and contemporary silhouette. Crafted from nylon, the design is defined by its two tone look and a low cut back that enhances the silhouette. The tonal lining ensures comfort and fit, while the Ami de Coeur metal plate at the back adds a distinctive and iconic detail.