I have their Level 1 collab mittens (with the urban camo).  Got them for free with my Spy Aces (also Level 1 collab) and I couldn't be happier.  Amazing mittens, amazing deal, they look dope, and they feel warm.  Definitely a bit heavy for spring/early summer days and definitely could see them being a little cool when it's in the negatives and windy.  However they are perfect for most days here in the Midwest and the leather is very nice.  10/10 would buy again.  I like them way more than my leather Saga mitts and those aren't bad at all.