Feel energized, rejuvenated and inspired to push yourself harder in your workouts with the help of these Voltaic 3 NM running shoe from PUMA on your feet! ; Breathable air mesh upper with synthetic suede overlays for added support. ; Lightly padded collar with nylon heel pull loop. ; Bootie construction provides a great, next-to-the-skin fit and feel. ; Fabric lining with a removable, die-cut eco-OthoLite sockliner provides comfort, material regeneration, air circulation and antimicrobial properties. ; Lace up front with a lightly padded, mesh-lined tongue for breathability and optimum fit. ; Mesh formstripe detail. ; Reflective TPU accents for greater visibility in low-light conditions. ; PUMA 10CELL technologytwo levels, the bottom shelf absorbs impact, while the top shelf allows the foot to reboundin the heel separated by a membrane creates tension during impact. ; ArchTec Technology gently guides the foot through a natural transition from touch-down to toe-off. ; Carbon-rubber outsole for traction. Measurements: ; Weight: 13 oz ; Product measurements were taken using size 8, D - Medium. Please note that measurements may vary by size.