Brooks Glycerin 22 vs Glycerin Flex

The Brooks Glycerin Flex and Brooks Glycerin 22 are very different shoes despite having similar names. The Brooks Glycerin 22 is a more conventional premium trainer, using its geometry and rocker to create smooth transitions and a plush, protective ride for everyday miles. The Brooks Glycerin Flex keeps a similar cushioned intent and high drop, but instead of leaning on a rocker, it builds flexibility directly into the midsole through a deep decoupling groove and segmented forefoot pods that allow the platform to articulate and bend more naturally with your stride. That design creates a more fluid, ground-connected feel. Outside of that flexibility-focused construction, both shoes end up offering a comparable level of cushioning and overall stability, though the Flex weighs less.