The Size M4/W6 Crocs Roy Deep Blue Nightfall Breathable Flex Slides 213756-481 are a comfortable and stylish sandal designed for casual occasions. Made of rubber with a slip-on closure, these slides feature a solid blue color with a synthetic lining. The breathable and flexible design offers comfort for all-day wear during the warmer months. Perfect for outdoor activities, these Crocs slides are a versatile addition to any wardrobe for men and women alike.