As someone who’s logged miles in everything from budget sneakers to premium running shoes, the Brooks Glycerin 21 feels like stepping onto memory foam clouds. The nitrogen-infused DNA Loft v3 cushioning? Absolute game-changer—it’s like walking on marshmallows without sacrificing stability.

The stretchy warp-knit upper hugged my feet like a custom sock, eliminating that annoying break-in period most running shoes demand. During my 5-mile test run, my wide feet (especially around the ball) had zero complaints—no pinching, no blisters. That toe box deserves applause for accommodating my rebellious second toe that usually screams in narrower shoes.

Now the plot twist: I initially worried the ultra-plush sole wouldn’t support my high arches enough. Surprise! Paired with my custom orthotics (ordered a half-size up as reviewers suggested), these became foot pain kryptonite—bye-bye plantar fasciitis twinges after long nursing shifts.

Minor gripes? The heel collar rubbed raw spots until I switched to tabbed socks (annoying extra purchase), and those bouncy soles made me stumble like a newborn giraffe on treadmill #1. Also, Brooks’ tubular laces knot if you so much as glance at them wrong.

After 200+ miles? Dirt-resistant uppers still look fresh, outsoles show minimal wear, and that ‘floating on air’ sensation hasn’t faded. Worth every penny for runners or anyone standing all day—just budget for specialty socks!