- Upper Disc Fit System provides a quick, easy, and comfortable fi t. Comfort Foam Upper stretches to conform to the foot and offers plenty of comfort. Net Mesh Upper provides breathability- Midsole PUMA’s unique PU foam formula offers high rebound and ultimate comfort. Midsole chevron grooves are design to compress during landing and rebound to provide energy return. - Molded EVA sockliner provides comfort under foot.- Outsole Guidance groove that runs from heel to toe to mimic natural gait pattern and offer a smooth ride. Flex grooves allow for asmooth transition and toe off Size: US 8.5 New