I have a pair of padded shorts from MEC, I only use them for long distance rides 100km+++. They work very well for me. I always wear them underneath my baggy shorts. If your rides are very short distance then any seamless underwear should work. If chaffing is a problem then some vaseline on the butt before the ride helps. I also have some very cheap polyester briefs form walmart they are ok for very short rides 40-50km.