Order about a half-size larger than your normal size and its just fine.  I use these shoes for refereeing soccer on turf and grass fields in Northern California all year around, and have been wearing Brooks Beast for about ten years.  They are unmatched for providing stability, support and cushioning, and allow me to officiate several games without having to soak my feet in a bucket of ice water at the end of the day.  I generally have two pairs - the new pair I use for refereeing and an older pair I wear as comfortable casual shoes.  For serious running, they are good for about six months, and for casual hiking and walking, for another six months to a year after that.  Even though these are not cheap, they are worth every penny.