Great summer paddling boot
They call it a sock, but it's really a wimpy boot. The neoprene and rubber sole are thin enough for summer use, but thick enough to take a little abuse. The low profile makes for a great fit inside a tight whitewater kayak. Sizing ran tight. I'm usually a 8.5 and ordered the 9, my toes are pressed right up against the tip of the boot. Since they are neoprene, this doesn't seem to cause any discomfort. I borrowed a pair of 10s from someone else and they fit perfectly.

Awesome Kayaking Shoe/Sock
Very Comfortable! You won't have to worry about these not fitting in you boat or cramping your feet! I've done a lot of walking on rocks, asphalt, sand and these hold up great!

Soft & Dry
These are extremely comfortable. Can walk around in them if need be. Good fit around ankles. Slightly roomy in the foot, but it may just be me. Pretty durable. Don't keep water out, per se, but drain well to allow comfort after they've dried some. Keep you warm in mild chill and still comfortable in the heat. I recommend for your next whitewater or recreational experience.

Great water shoe
These are well-made water shoes. They are flexible and protective. They do run small (which it says very clearly on the web page for this shoe). My feet are size 8, and I ordered small. They fit and are comfortable, but if my feet were any larger, I'd need a medium. Some folks have said that they are tight or hard to get on and off. They are tight but not binding. I have worn mine twice all day long (so they are comfortable enough to wear all day long). They are supposed to be a little tight to keep debris out of the shoe.

Perfect for kayaking
We are two novice female kayakers with big feet. We had problems with shoes, slippage, etc. These are perfect. We ordered a size up after reading reviews and they fit both of us perfectly.