Oh my gosh! This Whale Grey Nubuck Leather is something else! Birkenstock's have been worn in and around the Up There office for years now, it's about time we started offering them to our customers as well, there's nothing quite like slipping into a well-worn pair of 'Birks' while in the office. The legendary footbed is constructed using layers of cork and jute which is then topped off with a unique foam layer, built from millions of microscopic air bubbles. The "Arizona" is definitely the most recognizable model, with two straps keeping your foot held comfortably against the sole, they are also available in Green Suede Leather and Mink Suede Leather. Before you ask! Yes, they can be worn with socks!!!