With soft cushioning and support you can trust, you're free to let adrenaline take over your run. Moisture-managing Element mesh and synthetic upper for protection from the elements. Anatomical Brooks DNA in the midsole responds to your every step, dispersing impact for ideal comfort and protection. Progressive Diagonal Rollbar (PDRB) for pronation control and smoother transitions from the midstance phase into the propulsion phase. Omega Flex Grooves for more natural forefoot movement and fluidity. HPR plus abrasion-resistant rubber heel for durability. Flextra rubber piece provides a varied degree of support corresponding with gender and weight for enhanced flexibility. Wt. 9.2 oz.Brooks