It’s time to say goodbye to OTK boots and welcome Spring flat mules. Once the weather gets warmer, I want you to give a try to this beautiful and functional footwear. They may not be your favorite type of shoes, but you definitely should give them a try! Why do I love them so much? They are kind of shoes with flat soles and easy slip-on style, in other words saying, they are extremely comfortable, no matter how long you are about to wear them.