Skip to top navigation
Skip to my shopping bag
Skip to main content
Skip to footer links
Extra 25% off top brands with code EXTRA25 — Shop now
Brooks Glycerin StealthFit 21 Running Shoes - Men's
Sold out
Ready for More Choices?
Discover the widest selection of outdoor gear and apparel, with 30-day hassle-free returns on Altitude-Sports.com





Super softness & sleek style with every step.
Looking for a supremely soft men's running shoe with amplified style? The Glycerin StealthFit 21 is for you, thanks to a sleek upper that delivers a streamlined look and near-seamless fit. Plus, the plush DNA LOFT v3 cushioning is stacked 2mm higher than before, for added comfort on and off the run.
Features
• Best For: Supreme softness, Adaptable fit, Smooth and stable transitions, Road running
• Designed for: Road
• Supreme softness: Compared to the Glycerin 20, the Glycerin 21 features 2mm more of our super-soft, nitrogen-infused DNA LOFT v3 cushioning to maximize softness
• Updated adaptable fit: Updated, soft flat-knit upper offers a blend of stretch and compression that moves with your foot
• Smooth, stable transitions: The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions
Specifications
• Midsole drop: 10mm
• Experience: Cushion
• Cushion level: Most Cushioning
• Support level: Neutral
Learn more about how to choose running shoes
Looking for a supremely soft men's running shoe with amplified style? The Glycerin StealthFit 21 is for you, thanks to a sleek upper that delivers a streamlined look and near-seamless fit. Plus, the plush DNA LOFT v3 cushioning is stacked 2mm higher than before, for added comfort on and off the run.
Features
• Best For: Supreme softness, Adaptable fit, Smooth and stable transitions, Road running
• Designed for: Road
• Supreme softness: Compared to the Glycerin 20, the Glycerin 21 features 2mm more of our super-soft, nitrogen-infused DNA LOFT v3 cushioning to maximize softness
• Updated adaptable fit: Updated, soft flat-knit upper offers a blend of stretch and compression that moves with your foot
• Smooth, stable transitions: The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions
Specifications
• Midsole drop: 10mm
• Experience: Cushion
• Cushion level: Most Cushioning
• Support level: Neutral
Learn more about how to choose running shoes
Super softness & sleek style with every step.
Looking for a supremely soft men's running shoe with amplified style? The Glycerin StealthFit 21 is for you, thanks to a sleek upper that delivers a streamlined look and near-seamless fit. Plus, the plush DNA LOFT v3 cushioning is stacked 2mm higher than before, for added comfort on and off the run.
Features
• Best For: Supreme softness, Adaptable fit, Smooth and stable transitions, Road running
• Designed for: Road
• Supreme softness: Compared to the Glycerin 20, the Glycerin 21 features 2mm more of our super-soft, nitrogen-infused DNA LOFT v3 cushioning to maximize softness
• Updated adaptable fit: Updated, soft flat-knit upper offers a blend of stretch and compression that moves with your foot
• Smooth, stable transitions: The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions
Specifications
• Midsole drop: 10mm
• Experience: Cushion
• Cushion level: Most Cushioning
• Support level: Neutral
Learn more about how to choose running shoes
Looking for a supremely soft men's running shoe with amplified style? The Glycerin StealthFit 21 is for you, thanks to a sleek upper that delivers a streamlined look and near-seamless fit. Plus, the plush DNA LOFT v3 cushioning is stacked 2mm higher than before, for added comfort on and off the run.
Features
• Best For: Supreme softness, Adaptable fit, Smooth and stable transitions, Road running
• Designed for: Road
• Supreme softness: Compared to the Glycerin 20, the Glycerin 21 features 2mm more of our super-soft, nitrogen-infused DNA LOFT v3 cushioning to maximize softness
• Updated adaptable fit: Updated, soft flat-knit upper offers a blend of stretch and compression that moves with your foot
• Smooth, stable transitions: The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions
Specifications
• Midsole drop: 10mm
• Experience: Cushion
• Cushion level: Most Cushioning
• Support level: Neutral
Learn more about how to choose running shoes