Some days call for combining your daily sun salutation practice with your required half marathon strength training regimen. In honor of those demanding weeks, the Under Armour Women's SpeedForm Fortis Running Shoe is built to answer the call and understands the importance of remaining not only lighthearted, but light footed as well. Crafted specifically for high impact strength training and short term cardio sessions, the SpeedForm Fortis floats between workouts with ease. As a neutral running sneaker, the SpeedForm Fortis is crafted with a primary layer of Charged Cushioning and a secondary layer of Micro G foam which when combined absorbs impact and consequently rockers your foot forward, propelling your stride and increasing your speed while simultaneously ensuring impact protection and adaptive support. The seamless heel cup with silicone gripper and the smooth ArmourVent is built with welded Bemis seam tape and 6mm of 4D Foam which encourages next to skin comfort and reduced chafing while running. Additionally, a solid rubber outsole keeps you covered in high impact scenarios, so you can turn up the heat without worrying about your soles melting off.