I find these bibs are made from high end materials until you get to the top half. The straps are hard to adjust and and the buckles always come undone. The buckles seem cheaper than I would expect from Klim for a product such as this and always release while I am riding, so you have to stop, take your jacket off or at a minimum unzip to fix your pants - wonderful news when its super cold out! Also, waist adjustment is simply a presure fit velcro adjustment, would have liked to have seen something that is more like on some of the FXR bibs with an elastic waist band and a buckle. Zippers seem good quality and they do keep out the cold and keep you dry. Also fabric has proven durable.
I would not recommend purchase of these bibs and would either consider upgrading to the Klim Klimate bibs or go to another brand (another brand such as FXR is probably much cheaper for better functionally and similar performance). Buy your Klim Extreme Bibs.