Men's ADIDASA(R) ULTRA BOOST PB :: In addition to time and distance fast is a feeling in your Men's adidas Ultra Boost PB running shoe. Celermesh the lightest thinnest mesh upper by adidas provides a lock-down fit with no distractions. Your ultimate energy return and comfort comes through 20 percent more boost(TM) cushion while ContinentalA(R) rubber provides superior grip in your Ultra Boost PB.