DOLFIN Metallics V-2 Back One Piece Swimsuit,Amethyst Metallic (306),38 DOLFIN Metallics V-2 Back Shimmer, shine, and sparkle with the seriously shiny Dolfin Metallics V-2 Back One Piece Swimsuit. This stand-out swimsuit allows for a flexible fit and a great look that is perfect for mixing up your swim look at practice. -Skinny straps: For comfort.