Chaco Mens Classic Flip EcoTread Sandal Black Blue Sz 8 Casual Outdoor The Chaco Men's Classic Flip EcoTread Sandal in black and blue, size 8, is a stylish and comfortable choice for casual outdoor activities. This slip-on sandal features a solid pattern, rubber upper material, and a casual theme, making it perfect for the summer and spring seasons. The Chaco brand is known for its quality and durability, making this sandal a reliable option for everyday wear.