From Vivaia Website:"Square-Toe Recycled Mink Faux Fur Flats (Margot 2.0)Square-toeFlat 1cm/0.34" heelNatural Artemisia Argy herbal insole, with heel rebound, arch, and forefoot supportKnit upper made with recycled plastic bottlesHeel Patch for added comfortRubber outsolePackaged with 90% recycled and 100% recyclable cardboard* Machine wash in quick or delicate cycle, remove insoles before washing, and air-dry flatNote: The insole contains natural Artemisia Argyi herbal. People with allergies, please consult a medical professional before wearing."This pair: Size 39.5 (U.S. 9)BlackPre-owned, nice condition, very little wear