comfortable practically seamless. if you're an athlete, and have developed quads, they may ride up to a brief-like fit. but it doesn't bother me. the material is nice, and i never notice it until i take off my pants. so it's not a thing for me. more importantly, I like the pouch designed for the male anatomy. it supports without pressing against you. it's good for everyday activity and workouts (except if you're doing hard-core football drills with lots of plyometrics). I like this design better than MyPackage brand.