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Two extra millimeters of DNA LOFT v3 cushioning doesn't sound like much until you're twenty miles in — that's the detail setting the Glycerin GTS 21 apart from a standard stability trainer. GuideRails technology keeps the stride aligned without an intrusive post, a breathable engineered warp-knit upper (61.1% recycled) adds a secure fit, and a 10mm drop keeps the ride smooth and stable mile after mile.
Is the Glycerin GTS 21 a stability or cushioned shoe? Both — the Brooks Glycerin GTS 21 pairs GuideRails stability tech with extra plush DNA LOFT v3 cushioning, rather than making you choose one or the other.
