The Seabird Woven sandal is handmade with the highest quality, hand-tanned leather. The upper and insole (the part of the sole beneath your feet) are 100% leather and the outsole is rubber for easy grip at the pool, while boating, and at all your fun outdoor activities. These sandals feature Beek's signature molded arch for ultimate comfort and support. Leathers are vegetable tanned, the most sustainable method available, from tanneries gold-certified by the LWG (Leather Working Group).