The boots shown are Birkenstock Women's Sarnia ankle boots in black, style number 031802. They are made of leather or waxed suede with a side zipper and a removable, contoured cork footbed. The style is described as comfortable, roomy, and stylish, suitable for wearing with skinny jeans and leggings. They are available in European sizes, and it is recommended to check the size chart as they may run small.Birkenstock Women's Sarina Boots in black leather, size 10.5 US (42 EU), feature a round toe and zip closure. These booties have a 1-inch platform, a block heel, and a motorcycle theme, making them stylish and edgy. Made of solid leather, these boots are perfect for women looking for a fashionable and comfortable footwear option.