Brooks

Glycerin Flex

$170.00Daily Trainer

The Brooks Glycerin Flex is an innovative max-cushioned daily trainer designed for natural foot movement, offering a lively and energetic ride with exceptional flexibility. Its dual-density DNA foam midsole and deep flex grooves provide a comfortable, true-to-size fit, making it ideal for easy, long, and recovery runs, and even some tempo efforts. While praised for its modern aesthetic and versatility, some reviewers noted a firmer forefoot feel, a non-gusseted tongue that needs adjustment, and a lack of suitability for race-day speeds. This shoe is a strong choice for runners seeking a connected, flexible, and comfortable experience for varied daily training, but it's not designed for aggressive speed work or those needing significant stability.

Highlights

Exceptional flexibility and natural, connected-to-the-ground ride
Dual-density foam delivers a soft heel with a snappy, responsive forefoot
True-to-size fit with a roomy toe box and comfortable, breathable knit upper
Noticeably lighter weight for a max-cushioned trainer
Durable outsole with thick, grippy rubber coverage

Considerations

Non-gusseted tongue can shift and may require manual adjustment
Forefoot foam feels firm and compresses slowly, which may reduce comfort on long runs or faster paces
Reduced torsional stability and support may not suit runners needing structured guidance or those with heavy heel-strike patterns
Outsole traction can feel less confident on wet or cold surfaces