RESPONSE 2 M Birkenstock Plush foam on the collar

Plush foam on the collar and tongue enhances the feeling of comfort around the ankle and over the top of the foot—areas where you want no distractions

Foam on the bottom feels soft and cushy

Sweat It Out

With the Flex Runner 4

RESPONSE 2 M Birkenstock Plush foam on the collarWhen it comes to running, the right gear can make all the difference. Introducing the Response 2 Running Shoes, designed to elevate your running experience, stride after stride. These shoes feature a lightweight, breathable mesh upper that offers a fresh, comfortable fit, helping your feet feel dry and supported as you push through the miles. Underfoot, the full length Cloudfoam+ EVA midsole provides soft, springy support, built to make each step feel