How stiff are the highbacks on these? It says medium, but is there any comparison to another binding?

Well I have a pair of '10 Contacts in CMYK print and I love them. The highback on these bad boys are a little stiffer than the ones that come on the reg Contacts. Just like Lyman said, Kass rides a lot of pipe so he needs the highback to be a lil stiffer. But they are still nice and flexy when takin them to the park or just cruisin around. Strap is suuuper cush and never feel any pinching. Lifetime warranty on baseplates. Bombproof binding!! Get them, you will not be dissapointed. Union for life!!!!

It depends of the binding you are getting, Union uses a different amount of fiberglass in the two different size bindings. If you are getting a M/L you will see about 18% fiberglass as opposed to the L/XL there will be 30%. But the stiffness of the kass binding is stiffer than most other union bindings. Danny rides the pipe and needs a really responsive binding. You could say it is about the stiffness of the Burton Cartel, but to be honest, i have not ridden the kass so i do not know for certain. Can anyone else help out?