Introducing the Guess Light Blue Washed Slim-fit Jeans for men. The Miami jeans from Guess are undeniably the brand39 best seller. With its stylish wash, these jeans will elevate your outfits effortlessly. Featuring button closure and made with 99% cotton and 1% spandex. To find your French size, simply add 8, for example, if you wear a French size 40, choose w32.