Birkenstock's cork-based sandals made them a household name. The London Methow Loafer, built in collaboration with Filson, builds on that iconic base. The pebbled leather upper has pronounced stitching around the moccasin-style forefoot and a dual-ring strap closure. Like the sandals, the anatomic footbed is made from cork and latex, while the outsole is a rubber cork affair with a textured pattern for added grip.