It can't dethrone the ultra-lightweight Adizero Sub 2 for the title of lightest shoe on the list, but the Adizero Adios 2 comes pretty close. This is a 6.6-ounce shoe, so it's ideal for competitive runners. The simple and sleek design, which was created by Japanese shoemaker Omori, tells you that it means business. The shoes' mesh is so breathable that you just might forget you're wearing them. With that said, the responsive cushioning and Adiwear outsole are firm reminders that you're wearing high-quality Adidas footwear.