Old Gringo - Flash (Cayuse Black) - Women's: Be the center of attention in these boots. Premium leather upper. Dual pull-on straps. Stylish crystal design. Leather lined. Leather outsoles and heel. Tip of heel has added rubber for slip-resistance. Old Gringo(R) boots go through a 130 step handmade production process. Old Gringo(R) also develops and tans its own leathers and textures to make sure the end result is a superior quality product.