Joe Snyder underwear and swimwear. Elastic feature provides snug fit everywhere. Features a durable double-seamed waistband. Because Joe Snyder gear has no liner, it can easily be worn as underwear, swimsuit or sportswear. The very stretchy material ensures there is room to go smaller or larger. This means you can comfortably wear a medium just the same as a large. Fabric: 80% Nylon / 20% Lycra spandex.