The Clifton 8 features a new engineered, ultra-light mesh upper that is airy and smooth. The upper is seamless on the outside for a sleek look and clean silhouette and only has a few seams on the inside. The mesh wraps each foot in breathable comfort, allowing air to fully permeate the entire upper. Although lightweight, this mesh upper remains resilient enough for you to be able to put it through any workout. Furthermore, this construction provides a constant supply of fresh, cool air while simultaneously forcing out hot, muggy air that resides within the shoes during intense activity. Additionally, the upper offers reinforced eyelets for durability when tightening the laces. This construction allows you to get a personalised fit as well as prevents any in shoe slipping from occurring. When the laces are tightened the upper wraps around the top of the foot cradling it for additional comfort as well as providing a premium fit. The Clifton 8 features a flared heel collar and refined Achilles pull tab. The flared shape keeps the collar off the Achilles to mitigate any rubbing or chafing, and also acts like a heel tab to easily remove the shoe. The heel cup employs an internal heel counter for a secure fit, and extra padding around the collar teamed with an ultra-plush tongue boost comfort.