With key upgrades to fit and underfoot cushioning, the Jazz 21 delivers the essentials of a great running experience.
A dynamic, expansive mesh across the upper accommodates a wider range of runners while providing high breathability. Everun heel and midsole inserts offer great energy return giving you back more of the effort you put into your run.
Stack Heights: 25:17mm
- PWRFOAM midsole for shock absorption
- Everun heel and midsole inserts offer you more pep in every step
- Dynamic, expansive upper for breathability and fit
- TRI-FLEX outsole offers flexibility throughout your run
- FORMFIT performance contoured footbed conforms to your foot’s individual shape
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HOW TO CHOOSE THE RIGHT SIZE FOR RUNNING SHOES
Your running shoe size will generally be 1 to 1.5 sizes bigger than your regular (‘dress’) shoe size. Bear in mind also that one foot can be slightly bigger than the other.
First, kick your foot back into the heel of each shoe before checking how much space is left at the front. When standing in each shoe with your full weight on the foot, it’s best to have between half and a full thumb's width between the end of the longest toe and the end of the shoe.
When standing in the shoe, it’s best to have a little wiggle room for the toes, but the back of heel should still feel nicely secure.
Sprint spikes are best when a close fit. Distance spikes best when up to a half a thumb's width between the end of the longest toe and the end of the shoe.