Tulip ankle boots by Ilse Jacobsen. The boots has an YKK AquaGuard front zipper. The upper is made of recycled microfiber: 60% Nylon and 40% PU. It is lined with super-soft faux shearling: 100% polyester. The outsole is super flexible and light weight:75% Natural Rubber and 25% Recycled Rubber. We recommend you to impregnate these boots upon receipt and periodically, after commencing usage.