Maximum support for a more comfortable stride, the Beast GTS was designed with your feet in mind. Breathable engineered mesh upper DNA Loft v3 nitrogen infused cushioning adapts to your unique stride to deliver durable comfort Innovative GuideRails holistic support system support your body in its natural motion path while keeping excess movement in check Made with recycled materials equivalent to 5 plastic water bottles Generous roomy fit that stills provides a locked in fit Brooks Men's Beast GTS 24