WOMEN'S MACH 6 Size:8 while the Glycerin 20 remains

while the Glycerin 20 remains a pure neutral option

Glycerin 20: The Glycerin 20 is lighter than the GTS 21

look out for bears

that sounds like a personal problem

It’s rigid where it needs to be and compresses easily for quick hydration

WOMEN'S MACH 6 Size:8 while the Glycerin 20 remainsThe Rundown Your gateway to everyday speed. Behold our lightest, most responsive Mach to date. This lively trainer has been fine tuned for extra energy return with a super critical foam midsole and updated for enhanced durability with strategic rubber coverage in the outsole. Implementing speed focused design details throughout, weve enlisted a new creel jacquard upper with zonal breathability and an internal gusset to deliver the foot hugging comfort