Experience lightweight cushion with the Brooks Glycerin 21. Thanks to Brooks’ nitrogen-infused DNA LOFT v3 foam, the Glycerin 21 weighs less than the Ghost 15 while packing even more cushion!
Combined with an updated outsole, DNA LOFT v3 midsole cushioning smooth and effortless heel-to-toe transitions for a distraction-free run. The Glycerin 21 also features a new warp knit upper that flexibly hugs your foot for a plush and supportive fit.
You’ll feel like you’re floating with every stride with the Brooks Glycerin 21.

WHO THESE SHOES ARE FOR:

• Runners of all abilities looking for a  for easy paces or longer runs.
• Walkers of all abilities.
• People who spend all day on their feet for work.

WHAT’S IN THESE SHOES:

• DNA LOFT v3 – nitrogen infused foam provides light and soft cushioning
• Warp knit upper – breathable knit upper that gives a soft and flexible fit
• RoadTack – updated outsole rubber for increased durability
• Smooth transitions – rocker outsole geometry and beveled heel make for an effortless ride
• Recycled materials – RoadTack outsole contains a mix of rubber and recycled silica

HOW THEY FIT:

• SIZE: True to size
• HEEL: Locked in (plush padded tongue and stiff heel collar provide a secure fit)
• MIDFOOT: Moderate (knit upper gives a supportive, yet flexible, fit)
• FOREFOOT: Moderate-to-wide (most runners will have plenty of wiggle room)