Fun fact: A Derby is like an Oxford shoe's hip cousin. Featuring an open-lacing construction method, KEEN gave theirs the iconic comfort of our outdoor slipper and a modern wool-blend upper (with 50 percent recycled wool) so you can go everywhere in feel-good comfort. With its soft-yet-grippy outsole and room-for-your-toes fit, it's so comfy it feels like youre walking around your apartment. Wherever you go.