Hello and thanks for stopping by. These were given as a gift some time ago. I have them in another color and find them to be very comfortable. Happy shopping and thanks again! Taken from the Saucony website... "Product Details: The TOMBOGO™ x Saucony Butterfly collaboration by designer Tommy Bogo is a brand-new silhouette that combines. functionality with performance. The multi-functional shoe includes a modular inner boot that can be removed from the outer clog shell. The modular design enables self expression with an interchangeable system which allows the user to choose how they wear the shoe. Features and Benefits: PWRRUN cushioning Premium air mesh Co-branded logo Gradient sockliner Iced outsole pods Custom Box True to size. Half sizes suggested to size up Unisex sizing runs as men's sizing" **New and never worn with box