Pacer 2 represents the second generation of our most comfortable performance running shoe, featuring a redesigned upper that offers a more secure fit, increased ventilation, and enhanced durability for lasting comfort.   Combining a lightweight construction with the advanced Px Foam™ midsole technology, Pacer 2 delivers a lively, propulsive feel with every stride, making it ideal for both speed training and daily runs. The shoe's new and improved 2-layer engineered mesh upper, designed with body-mapped zones, enhances ventilation and offers a tighter and more secure fit for a stable and comfortable run. The added foam in the collar further boosts comfort. If you seek a lightweight and responsive running shoe that delivers both stability and speed, Pacer 2 is your perfect choice. Its innovative design and superior construction will help elevate your performance to the next level.   Px Foam™ Px Foam™ is an ultra-lightweight midsole material that excels in energy return, shock absorption, and flexibility. Crafted using a single, natural foaming agent, this innovative material is produced without chemical cross-linking agents, ensuring a non-toxic process. In addition, raw and finished materials are completely reusable. The high-performance foam has an extremely low density making it up to 20% lighter than traditional EVA. The reduced weight combined with explosive rebound make Px Foam™ perfect for every run.   Craft Endurance Fit® Craft Endurance Fit® features a narrow heel cup, mid-foot lock-in, and a spacious forefoot. The narrow heel cup ensures zero slippage, providing unmatched stability across all types of terrain. The mid-foot lock-in design offers a secure fit, boosting confidence with every stride. In addition, the spacious forefoot enables natural toe and metatarsal movement, enhancing comfort even more.