Pick it up, and you'll marvel. Flex it, and you'll be astounded. These are one of the lightest shoes we've ever made, without sacrificing an ounce of comfort. We've taken out every unnecessary element to engineer the airiest shoes imaginable. The truWALK Zero II T-Toe features adidas adiPRENE highly shock-absorbent cushioning that protects the heel at impact, adidas adiPRENE+ resilient and flexible forefoot cushioning that provides a responsive, dynamic push-off, and rubber pads on the outsole for a durable grip on a variety of surfaces.