Familiarity: I've used it once or twice and have initial impressions
I needed some liner shorts that had a good chamois and were breathable. These shorts have both. This is the "2 hour" ride short, but I usually ride 4+ hours and these are still comfortable. I also have the "3 hour" liner short and I like them both. When worn with a 5" inseam over-short, you can see the liner when pedaling, but that doesn't bother me. Even without grippers on the leg, the legs stay in place pretty well. I am 5'4" 125 lbs and wear a small with this brand. Try a couple of sizes as different brands fit differently. I wear a medium in Terry and Pearl Izumi. Overall these liner shorts are great!