Actually, it was 13 degrees where I was riding, but I was more impressed that I didn't overheat in them.
I would be concerned, rather than impressed. I'm sure they're good quality though.
@dan started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Actually, it was 13 degrees where I was riding, but I was more impressed that I didn't overheat in them.