No specific shoe sizes, general size makes it almost to get a perfect fit unless you're lucky. Velcro excess lace holder on heel is too small and barely sufficient to hold excess lace, can't hold two wraps. Very nice sole but wear size 11.5 and size choices were limited to slightly too small or too big, figure a company as big as Scubapro could have produced regular shoe sizes like their competitors. The sole is great, drainage is great, material is neoprene type so we'll see how it holds up. Would not purchase again due to size limitations.