Crocs are a type of comfortable and casual shoe made from a unique material called Croslite, which is a closed-cell foam that is both lightweight and durable. They have a distinctive design, with holes on the top and a strap on the back. They first appeared in 2002 and quickly gained popularity. They come in a variety of styles, colors, and patterns, including clogs, sandals, and flip-flops. They are known for their comfort, easy to clean and easy to wear. They are popular among people of all ages, but particularly among children. They are also often worn in healthcare settings due to their slip-resistant sole and ease of cleaning.