They are very warm in cold water, well made, and have lots of toe/heel feel. However, beware, as I wear an 8.5 Wide US Mens shoe, got the 9 US and could NOT get them off without tearing knee ligaments almost. I would order at least a full size or 2 sizes if you want to get them on and off fairly easily. I ended up cutting the entire upper boot front to the ankle hinge so I could get them on and off. Even with that, they form fit so tight it is hard to get them off the balls of your feet. I do not surf in them, merely surfski in cold water so my wet suit covers the lower legs. When I walk around in them much, even with a half size extra, my toes start to rub as just too tight. I am going to cut the current ones down and order some size 11 for the kayaking. Hope this helps. Definitely love the quality and warmth.