Wonderful undies for lots of movement (or for very little) - SAXX Kinetic Boxer Brief - Men's

Saxx makes wonderfully comfortable underwear with a large lineup of fabrics and styles for different uses. The Kinetics really shine in the high-activity spectrum, as the fabric is really durable, breathable, and prevents chafing. These are my go-to for backpacking (where I'm wearing the same pair for a few days at a time), biking, and honestly I love them for day-to-day use. They're just super comfortable. The Ballpark feature is amazing; I wish it was more widely implemented. These lack a fly, but I haven't found that to be a big issue--just a minor thing to adjust to. I'd recommend these if you need underwear that will take some heavy wear, but you'll end up using them a lot more often than when that's a concern.