Chippewa is known for its quality, not just in it's climbing boots, but in all their styles. It is one reason we carry their products.
Unfortunately, there is no way to be sure exactly which size would fit without trying the boot on. A good way to approximate is to try on another boot of the same toe and make, as sizes are usually consistent throughout the brand.
We do know, however, that there are sometimes variations in size, etc., that are impossible to predict. We supplement this problem with our generous return policy, which can be reviewed on the customer service portion of our web page.
Also, one of the great things about living so close to one of our stores, is that you may process any returns there, as well as receive hands on expert advice at that time from the Shepler's team!
Thank you for your question!!