With minor engineering changes compared to its predecessor, the Gel Cumulus 13 is more flexible yet maintains a platform well suited for neutral runners, supinators and even mild over-pronators.
1. Guidance Line has been added, which, in basic terms, is a groove that runs the length of the shoe to promote a reliable, efficient foot-strike.
2. The midsole has greater decoupling for improved forefoot flexibility.
3. Discrete Eye-stay Construction has been added to reduce excessive overlays and provide a fit that better adapts to individuals.
4. A welded overlay has been added to the lateral side of the toe-box for more secure forefoot fit.