My favorite product from Racer is Connectic 4 . After I got these gloves I really could enjoy my winter/spring flight even I could concentrate more than before as I never need to feel my finger cold. Also I love the heating vest! When I fly , often takeoff is not cold, I can say even it's hot,, so I don't want wear many stuff,, But then I got high ,,,super cold,, So I always choose wear a lot and sweat a lot on the takeoff to feel better in high altitude. Fortunately I got this heating vest! so I don't need to wear then when I getting cold , I can turn on my heat vest!! Racer product makes me more and more comfortable flight life!!