Search results for Waterproof socks are below:

http://www.hanzusa.com/

For over twenty years, HANZ Extremity Wear has been a pioneer in the field of form-fitting Waterproof technology for the hands and feet. Based on technology originally developed by company founder Cole Williams for clean room manufacturing, we began work on recreational products in 1990. We introduced our first completely Waterproof sock for the outdoor industry in 1993. Since then, we’ve established ourselves as the technical leader in the sector, with top level, three-layer membrane, seamless constructions that provide superior fit, protection and tactile sensation with less bulk and more durability. -Hanz

We design and manufacture all of our products in the U.S.A., and are continually innovating extremity wear for all outdoor activities, including sport, flame-resistant and Waterproof products. Hanz Extremity Wear is a family-owned corporation manufacturing all of its products in California. -Hanz

https://www.simmsfishing.com/

Simms is a fishing company. Founded on the pillars of innovation we strive to build the highest quality products to keep anglers dry, comfortable, and protected from the elements - no matter the conditions. -Simms

Made in the U.S.A. means many things, but for us here at Simms, mostly it’s a satisfaction guarantee that stems from our Bozeman, Montana backyard to yours. We’re proud to be the sole wader manufacturer in the country, bringing American-made goods to market. -Simms

◊ Note-> Not all of their products are manufactured in the USA - but they offer waders, pullovers, and socks that are manufactured in the USA that are here: Try this link