The Glycerin 18 has super soft cushioning. A reconfigured midsole and outsole allows for an increase in DNA LOFT for even more extreme softness underfoot without losing responsiveness or durability during your run. An OrthoLite™ sockliner provides premium step-in comfort. A plush transition with the DNA LOFT transition zone which makes moving from heel to toe feel incredibly soft and smooth. A continuing plush fit. The plush interior liner surrounds your foot and moves and expands with every stride. The engineered mesh upper and 3D Fit Print technology enhance the glove like fit of the Glycerin 18. An updated stretch double-jacquard mesh is engineered for breathability, flexibility, and a hugging support structure in the upper.