Step into the Glycerin 13 running shoe and into new worlds of comfort. We've pushed the limits of our 3D Fit Print technology to create a newly enhanced, seamless upper for streamlined support. The dynamic saddle wraps the foot in secure comfort and the wraparound collar adds the finishing touch for a perfect blend of Ideal fit and plush comfort. Underfoot, the Super DNA midsole provides 25% more cushion than our regular DNA for the ultimate in smooth rides. Ideal Pressure Zones in the outsole optimize pressure distribution from heel to forefoot and the rounded heel helps keep your body in its Ideal alignment.