The Rebel S.B.S. shoe is great! My shoe size is 10.5 so I ordered a pair of the shoes size 44; they were very comfortable but I was worried they were a little big. I called HucknRoll's customer service and they allowed me to purchase a second pair of the shoes size 34.5 to compare with the 44's and then return the pair that didn't fit. The 34.5's were barely too small so I returned them; HucknRoll quickly refunded my money. The 44's fit well, I have to tighten the velcro straps as tight as they will tighten to get a somewhat snug (not quite as snug as I would like) fit around my foot. The preset S.B.S strap is also barely too loose but is adjustable by velcro; I adjusted the velcro portion of the S.B.S strap and it works perfectly; it holds my heel in place. I have had no problems with my heel slipping in the shoe and the shoe is wide and loose enough that my toes do not go numb. The rebel s.b.s shoe is a very comfortable, well made shoe with great power transfer. My experience with the sizing of this shoe is that they run a half size small so purchase a half size bigger than your normal shoe size. HucknRoll is great, they have fair prices and the best customer service in existence.