Birkenstock Mogami Terra M Sandals Properties: The Birkenstock Mogami is an indispensable companion for your little one's daily adventures. Its secret lies in its waterproof footbed with toe protection and its functional sole, which is made of double-layer foam that adheres to the footbed and upper. This makes the shoe exceptionally flexible and highly durable on almost any type of terrain. The polyurethane sole is applied to the insole in the form of a double-layer foam, making it extremely flexible and ensuring excellent grip and high durability. The upper material of the shoe is skin-friendly and durable synthetic material, Birko-Flor®. It features an anatomical trough footbed. Upper material: Birko-Flor®. Lining: polyurethane (PU). Sole: lightweight polyurethane (PU) sole. Specifications: two straps equipped with an adjustable Velcro closure; heel strap. Made in Germany. Upper: Birko-Flor®. Birko-Flor® is made of easy-care and hygienic PVC, lined with a soft, breathable fleece layer on the inside. This high-quality, comfortable, and durable material is very gentle on the skin. Shoe insert: polyurethane. Polyurethane (PU) is a flexible, waterproof, and dirt-resistant material that makes shoes extremely easy to care for. Liner material: polyurethane. Polyurethane—also known as PU—is a synthetic material ideal for outdoor use. It's water and dirt resistant and very easy to care for.