Amazon.com | KEEN Women。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 you\'re walking around your apartment. Wherever you go. ReWooly upper is crafted using a 50 percent recycled Italian wool blend and a circular manufacturing process. Hemp laces add a natural touch. Generous space across your forefoot lets your toes spread out and a removable insole cushions every step. Gum rubber and cork outsole gives the perfect amount of grip while using less rubber. Size 11. Excellent used condition.