Review on Tilos 3Mm Waterproof Neoprene Fin Socks - Ideal For Scuba Diving, Snorkeling, Swimming, Watersports, Hiking & More! by David Urbanski

I wear a US 11 men's shoe size and the large fit like a sock. I haven't had a chance to use them yet, as they do not fit under the Aqua Lung Sport Adult Admiral LX Mask/Island Dry Snorkel/Trek Fins/Travel set I purchased to go along with them. I will bring them to the beach with me, to use when I'm wading in the Atlantic, to protect my feet against foreign objects. Once I use them for a while, I'll update this post with comments about how they fared.