Those are definitely padded cycling underwear shorts. As such, they definitely need to be worn under a pair of lightweight shorts (I like shorts that have a seamless crotch or saddle in them). I use liners (underwear shorts) about 90% of the time when I bike, and they feel bulky when I'm not on the bike. But when I'm riding, they are very comfortable. I also went through four different brands of liners until I found the one that fit and felt best. Give the liners a try and see how they feel after a few miles.