You've never worn boxers like these before. Our underwear collection brings you this colorful Van Dyke 4 Piece Colorful Modal Fabric Boxer Set. This solid set features a combination of Spandex and Modal (which is a rayon). It's a semi-synthetic cellulose fiber made from a spinning combination of reconstituted cellulose that derives from beech trees. Our boxers are so comfortable and relaxed that you wondered how you ever got along without them.