These white and black Rick Owens X Birkenstock Babel sandals have been crafted by hand in Germany with a cowhide leather upper. Supported by a cork and latex footbed, each pair is open toe and features two front Velcro foot straps. Lined with suede, this style also has logo details on the hook and loop adjustable fastening straps. 'The axiom of choice is necessary to select a set from an infinite number of socks, but not an infinite number of shoes,' once said the philosopher Bertram Russell. The lesson here is that those with a Birkenstock foot fetish should have lots and lots of meaningless socks.