Tulip ankle boots by ILSE JACOBSEN HORNBÆK. The upper is made of recyled microfiber attached to our iconic Tulip outsole, made of 75% natural rubber and 25% recycled rubber, with match colored recycled thread, using no glue. The boots is lined with soft faux shearling consisting of 100% polyester and has an YKK AquaGuard front zipper. The insole, lined with pig suede, has padding and support, ensuring great comfort. We recommend you to impregnate these boots upon receipt and periodically, after commencing usage.