HELM Boots is sized using the Brannock system (the sizing device found in most shoe stores). All of boots, with the exception of The Pablo, run true to size. This means that if your foot is measured to be a size 9 you will wear a size 9 in HELM. HELM Boots are sized similarly to other heritage boot brands so if you are a size 9 in Redwing, HELM Boots would suggest ordering a size 9 in HELM. Running shoes and sneakers tend to be sized a bit bigger than boots so we suggest sizing down a 1/2 size from your sneaker size. HELM Boots also offers free exchanges for un-worn boots so that you are able to find your perfect fit.