I bought these in the spring and thought the chammy wasn't thick enough, and it's a little light. But as the weather warmed up I've been wearing these instead of my longer, thicker 'zumis and they're really comfortable, and i stay cooler. They're thin with mesh on the side which is great, but i don't know about them being great on the bike and off, like the copy says. my wife told me she could practically see my pubes through them. Since i don't sit around a brew pub, coffee shop or any place in my bike stuff, I'm okay with all that. They're my summer bike short. Now if i could pick up a second pair for around 40 bucks I'd be stoked.