Friso from our dutch distributor Marsch Sportswear writes:

here we have Ultrarunner Henk Sipers, who will participate in the Yukon Arctic Run, over 100 miles in temperatures of minus 40 degrees.

He has been training in a giant freezer to test his equipment. Of course he is wearing X-Socks to keep his feet warm and dry. His training session was seen on Dutch tv

Well, I say thanks to Friso and Good Luck to Henk. The YUKON ARCTIC ULTRA will take place Feb 11th - 19th in Whitehorse, Canada

X-Socks are the official sock of the Mountain Rescue Association.

skipressworld writes in their article:

The many dedicated professionals at the Mountain Rescue Association will call X-SOCKS home to their hard working feet.

David Ponce has a great review of X-Socks and X-Bionic UnderGear over at ohGizmo. Nice that he took the time to test the samples himself and write about them.

His verdict:

So, there you have it, people. These may truly be the most technologically advanced undergarments around. They have been engineered to give you an outstanding sporting experience, and I’m happy to say that any self respecting athlete should get their hands on some.

Thanks, David.