Awesome- bought two pair
I ride in temps down to about 40 degrees and usually used leg warmers. My Castelli (Duran) leg warmers are a slight bit warmer than these tights, but these are way more comfortable- no upper thigh cuff squeeze- so I use these almost exclusively now. Plus, as the day warms up, they are middle-of-the-road enough in warmth to have a broad comfort range. I have grown to like thin chamois, and this is a good thin one. Two thumbs up.
I didn't have the sizing issues described by many others. I'm 5'8", 155 lbs, 31" waist, 31" inseam, athletic build. More a crossfit guy than a biker. Read reviews and bought a Large, but it fit sloppy. Bought Medium and it fits great- snug but not tight. Length perfect. Only issues is with the straps, that feel a little short (I have to yard the bids up really well when I put them on, not uncomfortably, just deliberately) and they don't want to lay flat (want to roll), plus sometimes when taking off the bib the stretching makes disconcerting little ripping sounds down around the front strap anchor area, although in 20 rides I've seen no indication that anything is coming apart. On the bike, no issues with the straps- they disappear, just as one would hope.
Overall, love them. Just bought a second pair so I will never be caught without a pair because it's in the wash.