X31 Sports Mens Performance Boxer Briefs Underwear with Cool Temp Tech and Breathable Mesh Flex Open Fly YOUR "MAN PARTS" WILL BE HAPPIER - Larger mesh front pouch and working fly make these Athletic Underwear a must-have for all guys. Whether you are running, camping playing sports, on long travel or just looking for a more fashion conscious pair of performance boxers beyond your normal tighty whities, this is the underwear for you. KEEP YOUR JUNK COOL AND DRY - Warmth and moisture inside a Man's crotch area is a recipe for discomfort and disaster. It's also an easy way to get "jock itch". That's why we constructed these Boxer Briefs with ventilated mesh in the groin and inner thigh panels for improved breathability to keep your nether regions cool, dry and comfortable. HELPS REDUCE CHAFING - Runners, Cyclists, Crossfit Athletes alike, know the pain that inner thigh chafing can cause (aka chub rub). That's why in addition to the vented mesh inner-thigh leg panels all stitches, seams and panel locations were intentionally designed to reduce the friction during long workouts. SAY GOODBYE TO SWAMP BUTT - Constructed from a lightweight Polyester and Spandex blended fabric, specifically chosen for its breathable and moisture wicking properties. Superior to cotton and nylon in cooling. New Tagless label design to reduce itching, and a soft but strong jacquard waistband for improved comfort and reduce the need to constantly pulling up your shorts. While it may not totally reduce "plumbers butt", we've taken a "crack" at it. LIFETIME MONEY BACK GUARANTEE - We stand behind the quality of our Underwear on Amazon. No need to worry about getting an unsatisfying pair of Boxers. We promise to return your money if you are not happy.