The Crocs Professional comes with closed top protection and ventilation ports on the sides of the shoe. This adds to the anti fungus and bacterial value to the shoe. The non-marking soles are just one benefit from the Italian crafted design. Style and functionality are what was in mind when the Professional model was created. It is cool, comfortable, and molds to the wearers feet. The sides of the Crocs shoe have ribs so any fluid that gets on the show will channel away from the ports. Slip- resistant, anti-microbial, and odor resistant come standard with this Crocs footwear model along with non-marking soles. It’s lightweight and buoyant due to the croslite™ PCCR material. Men’s Crocs sizes are: 4 – 13. Woman’s Crocs sizes are: 6 – 12.