Santa Claus relies on the British tradition of tailoring craft. Santa wears Savile Row.
"On a cold Novembers night in 1863, a note was left on the mantle of Davies & Son, the oldest independent tailor on Savile Row. The note contained a series of measurements, signed Santa. Every year since then Allen Bennet the proprietor and head cutter has created Santa's custom suit. The only thing that's changed is his waistline."