Women's ALTRA® HIIT XT: Train confident during high intensity in your new Women's Altra® HIIT XT training shoe. Harness your strength with the stable PowerSole outsole giving you balanced energy output. Cut on a dime, jump and climb with the Wrap-Around Gum Rubber Outsole giving you grab and response. Dish out your hardest workouts cuz the HIIT XT mesh upper is ready to rock high-intensity, gym and CrossFit.