
Swiftwick
Designed to Perform
The Sustain line from Swiftwick is a sock collection made with REPREVE fiber. From the “second skin” fit to the supple finish, you'll feel the difference the moment you put them on, including the right amount of cushion in the areas of your foot that need it the most.
Need Another Good Reason to Buy Swiftwick?
REPREVE helps make Swiftwick socks better for the environment. Plus, a tightly-knit construction produces a softer, denser, more durable garment. So good, in fact, Swiftwick says they're “the best socks you will ever wear... guaranteed.” Wear Swiftwick and buy fewer socks.
More About Unifi

Business Without Borders
From China to the Americas, we source, manufacture, consult and sell in every major textile region in the world. Wherever you choose to do business, we connect you with the consistent service, flexibility and high-quality, innovative products you demand.

Making Everyday Products Better
True innovation starts in the fiber. But it doesn’t end there. What will you do with it? See how other brands and innovators have used Unifi fibers and technologies to make products more comfortable, more functional, easier to care for, longer lasting, and sustainable.
Get in Touch
How Can We Help?
True innovation starts in the fiber. But it really gets going once we start talking. Let us know how we can help by filling out the form below, and we'll be in touch quickly.
