Find MW The Gwenn Block-heel Sandal on Editorialist. When you select your size below, 'H' equals a half size. 1 3/4' heel height. Upper: 100% leather. Lining: 100% leather. Sole: 38% synthetic rubber, 31% recycled rubber, 31% clay. Do Well: leather sourced from a tannery that was certified by the Leather Working Group (LWG), an organization that works to promote sustainable environmental practices in the leather industry. Imported. Select stores.