The Glycerin 13 pushes the limits of 3D Fit Print technology to create a newly enhanced, seamless upper for streamlined support. The new dynamic saddle wraps the foot in secure comfort and the updated wraparound collar adds the finishing touch for a perfect blend of ideal fit and plush comfort. The upper features a conformable saddle that wraps the foot, while 3D Fit Print creates a custom fit without adding weight. At just 10.9 ounces, the Glycerin 12 is lighter than ever, but full of new technologies to elevate your run. The midsole boasts a range of technologies that work together to ensure a plush ride including Super DNA, Full-length S-257 Cushsole, Full-length Segmented Crash Pad, Omega Flex Grooves, and Universal Sprung Platform The outsole construction is designed to provide the ideal distribution of pressure as well as traction, comfort and durability with IDEAL Pressure Zones, HPR Plus, Forefoot Cush Pod Construction, Soft Blown Rubber Forefoot and Omni Grooves. The upper construction provides comfort, breathability and lightweight with 3D Fit Print, Profile Sockliner, Conformable Saddle Construction, Moisture-managing Element Mesh, Synthetic Overlay Materials and Moisture-managing Element Linings.