UV 50+ rated four-way stretch 8 ounce spandex designed by XCel from the yarns to finished product for the most high performance, durable and effective protection from the sun * Flatlock seams, snug fit * Beefy 8 oz Lycra spandex for durability * Comfortable low collar * Four-way stretch spandex binding on waist openings for longer life and to prevent rolling. Hemmed sleeves.