Based on the search results, the "solid piece" often associated with conservative, athletic-style swimwear is the .
Made from 100% polyester to be resistant to chlorine and pilling, ideal for regular lap swimming. conservative039.jpeg
Includes a built-in shelf bra with sewn-in cups for added comfort. Availability: Offered in sizes 4-22. Other similar options identified include the beautyin Boyleg Athletic Swimsuit and ShuoBeiter Long Sleeve Solid Color Swimsuit , which are also designed for conservative coverage. Dolfin Aquashape Women's Conservative One Piece Swimsuit Based on the search results, the "solid piece"