Womens Glycerin Stealthfit 21 Neutral Running Shoe - Supreme Softness

Our review of the Glycerin Stealthfit 21 finds it best suited to women runners who prioritize a plush, close-to-foot ride and want cushioning that smooths out every stride. The single biggest reason to buy is the updated nitrogen-infused DNA LOFT v3 midsole, which delivers noticeably softer, responsive cushioning without feeling bulky. Fit is snug thanks to the Stealthfit flat knit upper, and the shoe's broad platform and stable geometry help create smooth heel-to-toe transitions for those who value a distraction-free run.

Key Features

• Supreme Softness: DNA LOFT v3 foam provides lightweight, responsive cushioning that feels plush underfoot while remaining durable for regular runs.
• Secure Fit: The updated flat knit Stealthfit upper blends stretch and compression to hug the foot and reduce slippage without adding pressure points.
• Smooth Transitions: A broad platform stabilizes the foot and promotes even heel-to-toe roll for a consistent, confident stride.
• Breathability: Seamless flat knit construction allows airflow to keep feet comfortably cool on medium-length runs.
• Trusted Acceptance: This model carries the APMA Seal of Acceptance, indicating beneficial design elements for foot health.

Who It's For

The Glycerin Stealthfit 21 is ideal for women road runners who want a plush, protective ride-especially heel strikers and those who prefer a soft underfoot feel over a max-responsive racing shoe. It suits daily trainers, long easy runs, and anyone seeking a stable platform combined with cushioning.

Runners who need a very roomy toe box or those who favor a highly responsive, race-day firmness should look elsewhere. Also consider sizing carefully, as some wearers find this Stealthfit version runs slightly small compared with previous iterations.

Pros & Cons

Pros

• Exceptionally soft, lightweight cushioning that maintains responsiveness for longer runs.
• Stretch-and-compression Stealthfit upper creates a secure, adaptable fit without seams.
• Broad platform and geometry give stable, smooth transitions from heel to toe.
• Breathable knit upper helps keep feet cool during training sessions.

Cons

• Fit can run slightly small for some customers, so trying a half size up may be necessary.
• Runners seeking a very firm, race-oriented feel may find the cushioning too plush.

Specifications

Model	Glycerin Stealthfit 21
Gender	Womens
Cushioning	DNA LOFT v3 nitrogen-infused foam
Upper	Flat knit Stealthfit construction
Fit	Snug, close-to-foot
Award	APMA Seal of Acceptance

Our Verdict

The Glycerin Stealthfit 21 is a strong choice for women who want a supremely soft, secure daily trainer that protects the foot and smooths each stride. It represents good value for runners who prioritize cushioning and comfort over a stiff, race-day feel; just check sizing because the fit trends slightly small for some wearers.

Frequently Asked Questions

Are these shoes good for heavy heel strikers?
Yes, customers report the plush DNA LOFT v3 midsole offers excellent cushioning for heel striking and absorbs impact well.

Do they run true to size?
Some users find the Stealthfit upper runs slightly small, so consider trying a half size up if you are between sizes or prefer extra toe room.

Is the upper breathable for warm-weather runs?
The flat knit seamless upper is designed for breathability and helps keep feet cooler on regular road runs.