The Green Silence is more than just a red and yellow shoe wrapped in green. In our quest to make our products more people- and earth-friendly, we never sacrifice premium performance. The Green Silence is first and foremost a blazin' fast performance racing flat. We just happened to concoct a way to make it as gracious on the environment as it will be for you in long-distance competition.

All Green Silence materials meet Brooks' rigid quality control standards for high-mileage training shoes. But of course these are just our words. Here's what some competitive runners said about their Green Silence wear-testing experiences:

"After 100 miles, still holding up nicely. The heel is a nice compromise between stiff and soft. I hate shoes that are too squishy but also dislike shoes that jar with each heel strike. Even with what feels like a thinner sole, I felt like my foot was well protected."

"The small amount and strategic location of the seams is awesome. I don't feel any chaffing or blisters from these, and that is key since many flats leave you with blisters."

"Very comfortable fit. The asymmetrical lacing helps provide a very snug and secure 'wrapped' midfoot."

"The shoe didn't help or hinder with transition—it allowed your foot to do its thing."

"Very natural/smooth transition from heel-strike to propulsion. . .the underfoot feel of the shoe feels balanced and very consistent throughout the entire gait cycle. The midsole feels flexible and responsive—I feel it encourages a more efficient foot-strike and toe off."

"Unlike racing flats I've previously worn, the Green Silence manages to hold its own (and me!) for distances of a half marathon and beyond."

Key Performance Features:

Midsole: Yep, the Green Silence gets our biodegradable, high-resiliency BioMoGo midsole foam you'll find in other Brooks shoes. But instead of making the midsole paper thin like you'll find in most racing flats, the Green Silence gives you a thicker midsole that offers a wider base net for more inherent support. That means it'll handle your stride as well at mile 2 as mile 26.2.

Outsole: Look no further than the bottom of the Green Silence for Brooks' eco-friendlier high-abrasion rubber (HPR Green) in high wear spots. And like the midsole, the Green Silence gives you full thickness of this outsole material for long-run durability. But don't worry; we minimize its placement to keep weight down.

Upper: Fit is it. And if a racing flat doesn't fit like a glove, we've lost the race before the gun fires. The Green Silence—with its conformable upper materials and asymmetrical vamp and lacing system—hugs your foot like a sock. The wrap-over tongue won't slide around. Fewer seams means less potential for rubbing, and multiple eyelet options for top tongue lacing customize fit and ensure a snug midfoot wrap.