10-year-old nighttime bedwetting

My ten year old son began by telling me when he gets up to pee at night he sometimes doesn't pull his pants down enough and ends up peeing on his underwear etc. But while doing his laundry I noticed an overwhelming smell of urine on most of his nightclothes and sat him down and he admitted that at times he pees at night. It must not be a lot because his bed sheets and mattress are not soaked with urine or anything. The thing is he must not wake up in time or he sleeps too hard and then when he does realize because he's a little wet he uses the bathroom and changes his clothes. So I know that this happens with some kids. I'm trying to figure out a type of boxer briefs or something that does not look like A diaper that he could wear at bedtime that is basically for night time bedwetting so he doesn't ruin all of his clothes. The only thing I'm finding online or briefs that basically look exactly like diapers. Anyone have any suggestions?