What is the shoe size for Medium and Large?
GERALD D Medium fits a mens size 10 foot perfectly; snuggly just as I wanted. Probably max size for a medium; I believe any foot size larger would be uncomfortable.
CEYLON L They are a great buy. Nice product,and feel good. But you have to have your Fins 2 sizes bigger to wear them. If you wear a 10, your fins must be a 12.
DAVID B My wife who wears a women's 8-8.5 wears the size Medium comfortably
CHIUNG T I ordered a medium and it fits me well. I wear a shoe size 8.5/9. Like them so much I ordered a second pair.
ZANE C I wear a 9 to 10 and got a medium size that fits great
PETER C I ordered a Large and I wear between a 10.5 and 11 depending on the brand. I love these boots and they fit great!
DOUGLAS T I ordered 2 pair (one in Med. and the other in Lg. to find the best fit. I wear a shoe size 11-11.5 and the Lg. boot fit perfectly whereas the Med. would be more adapted to size 9 - 10. They are quite elastic and therefore adapt well to to foot variations. Great boots for use with full-foot snorkeling fins and enough beef underfoot to keep at least the worst of the sharpies from poking through while hoisting your fins. Money well spent.
BRUCE S I wear men's 10-1/2 to 11 street shoes and the Large Cressi Non Slip 3 mm Boots fit me well. They are snug but not uncomfortably so and fit well into closed-heel fins. The rise from the bottom of the heel to the top of the boot is about 8" which helps keep sand and small rocks from getting in the boots, especially when tucked inside your wetsuit. The boots do not have hard soles so they're not well suited for walking on coral or sharp rocks.
JEFF H I wear medium sized cressi 2.5 mm. I wear shoes and sneakers 8.5 or 9 US depending on shoe. I think you could still use medium up to about 9.5. Hope this helps.
JOHN M I'm a 10.5 shoe and the medium fits great.
DEWAYNE S I purchased the large and I wear a size 10-11 depending on brand. My wife is in a small, and she wears a women's 8.5. Hopefully this will hep you.