The Saxx Men's Ultra Boxers with Fly are made from a viscose fabric made from natural fibres derived from plant cellulose that creates a moisture wicking and breathable soft blend. Every pair of Saxx underwear houses their patented BallPark Pouch construction. Designed for contact-free support, this 3D hammock-shaped pouch keeps everything in place, thanks to mesh panels that prevent skin-against-skin friction, and no exposed stitching Flat Out Seams for no-chafe comfort. Taking a 360-degree view of the body, Saxx consider fit, feel and function, and use nine panels of fabric to create three-dimensional shaping around your glutes, thighs, quads and hamstrings, including the built-in mesh panels of the BallPark Pouch. Elevating your everyday with a slightly looser fit combined with super-softness and maximum breathability, the Saxx Men's Ultra Boxers also feature a fly and an anti-roll waistband for comfort.