I won't mention something like "thickness" or "warmth" as suggested above the box I'm putting it in because I haven't had a chance to look at valve stem caps on my to cuddle truck; As such, I cannot honestly comment on the thickness or warmth of my amazing valve stem caps. call me weird i know It was tempting because I get compliments on my to-go caps almost every day. I love them and a lot of people have asked where I got them from. They're holding up pretty well during our recent winter-spring transition in Wisconsin. Would definitely buy again may have to because I think someone will end up stealing them lol. Then I will have to order some of these with a lock. Until then, totally love her!