Spring marathon training has required more flexibility than I’ve ever needed before. That’s where the brooksrunning #GlycerinFlex comes in. #ad Park runs ➡️ treadmill miles Workouts ➡️ easy, slushy runs Old running shoes ➡️ flexible midfoot The Glycerin Flex is different than every shoe I’ve run in — the flexibility and responsiveness seem next-level. Thankful to have these new shoes and the #BrooksRunningCollective fam supporting my every move.