Brooks Men's Glycerin GTS 21 Supportive Running Shoe - Plush Cushion

In this review the Brooks Men's Glycerin GTS 21 is shown to be a top choice for runners who want maximal cushioning plus reliable support. The shoe's standout feature is its nitrogen-infused DNA LOFT v3 cushioning, which delivers a pillowy ride without feeling heavy, while the GuideRails holistic system keeps excess motion in check. For road running, gym sessions or daily wear where comfort and stability matter most, this Glycerin GTS 21 balances supreme softness with guided support in a familiar, improved fit.

Key Features

• GuideRails holistic support: Keeps your foot and body aligned by limiting excess movement while allowing natural motion, which helps reduce strain during runs.
• DNA LOFT v3 cushioning: Nitrogen-infused foam provides exceptionally soft but responsive cushioning that stays lightweight and durable over miles.
• Plush internal stretch bootie: Surrounds the foot for a sock-like fit that expands and moves with your stride for consistent comfort.
• Warp knit upper: Breathable and flexible construction gives an accommodating fit that stays soft against the foot during long wear.
• Broad platform: Stabilizes the foot for smooth heel-to-toe transitions and a steady on-the-run experience.
• APMA Seal of Acceptance: Recognized design considerations that support foot health and biomechanical needs.

Who It's For

The Glycerin GTS 21 is ideal for runners who want maximal cushioning but still need support to control excess motion, including those who run on roads and spend time in the gym. It suits anyone who prioritizes comfort and protection on daily runs, recovery days, or walks where a soft, stable platform reduces impact.

Runners who prefer minimal or highly responsive racing shoes should look elsewhere; this model emphasizes plushness and guided support over a race-flat feel. Those seeking ultra-lightweight trail footwear should also consider a trail-specific design instead of this road-focused shoe.

Pros & Cons

Pros

• Exceptional softness underfoot from the nitrogen-infused DNA LOFT v3 foam.
• Confident support from GuideRails that helps with arch and knee comfort reported by customers.
• Comfortable, adaptive fit thanks to the internal stretch bootie and warp knit upper.

Cons

• Very plush cushioning may feel too soft for runners who want a firmer, more responsive ride.

Specifications

Model	Glycerin GTS 21
Intended use	Road running, cross training, gym wear
Support system	GuideRails holistic support
Cushioning	DNA LOFT v3 nitrogen-infused foam
Upper	Engineered warp knit with internal stretch bootie
Recognition	APMA Seal of Acceptance

Our Verdict

The Brooks Men's Glycerin GTS 21 is a strong choice for runners who want plush, long-lasting cushioning paired with meaningful support. It offers great value for anyone seeking foot comfort and stability in daily road miles or gym sessions, especially if foot pain or knee strain is a concern; just know the ride prioritizes softness over a firm, race-oriented feel.

Frequently Asked Questions

Are these shoes good for overpronation?
The GuideRails holistic support is designed to limit excess motion, making this shoe suitable for mild to moderate overpronation by providing guided stability.

How does the fit compare to previous Glycerin models?
The GTS 21 has a plush internal stretch bootie and warp knit upper for a more accommodating, sock-like fit compared with prior versions while keeping familiar cushioning and support.

Are they durable for daily running?
Yes, the DNA LOFT v3 cushioning is engineered to be durable and customers report the shoe holds up well for regular use and miles.