Crocs Echo Clog Unisex Slip On Shoes 207937-402 Size M10 W12 Dark Grey The Crocs Echo Clog Unisex Slip-On Shoes in dark grey are a comfortable and breathable option for casual wear. Featuring a slip-on design with a waterproof rubber outsole, these shoes are perfect for the summer, fall, and spring seasons. The ethylene vinyl acetate and polyester upper material combined with a synthetic lining ensures durability and a comfortable fit. These Crocs shoes are accented with the signature logo and are part of the Echo Clog product line, making them a stylish and practical choice for both men and women.