{"product_id":"brooks-glycerin-21-mens-cushioned-nitrogen-marathon-running-shoe-1204101b388","title":"Brooks Glycerin 21 Men's Cushioned Nitrogen Marathon Running Shoe","description":"\u003ch2\u003eBrooks Glycerin 21 — Men's Cushioned Nitrogen Marathon Running Shoe\u003c\/h2\u003e\u003cp\u003eExperience the pinnacle of Brooks cushioning technology. The \u003cstrong\u003eBrooks Glycerin 21\u003c\/strong\u003e is the brand's most luxuriously cushioned daily trainer, engineered for male runners who demand maximum softness underfoot without sacrificing responsiveness. From long Sunday runs to full marathon efforts, the Glycerin 21 wraps every stride in plush, nitrogen-infused comfort.\u003c\/p\u003e\u003ch3\u003eKey Technologies\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen-Infused DNA LOFT v3 Foam\u003c\/strong\u003e — Brooks' most advanced midsole compound yet — nitrogen-infused for an ultra-soft, cloud-like feel that remains lightweight and responsive across every mile.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Knit Upper\u003c\/strong\u003e — A seamless, sock-like engineered knit upper that conforms to the natural shape of your foot, delivering a personalized, irritation-free fit from the first step to the last.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSegmented Crash Pad\u003c\/strong\u003e — An integrated outsole system that adapts to your unique footstrike pattern, ensuring a smooth, fluid heel-to-toe transition on any surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlush Collar \u0026amp; Tongue\u003c\/strong\u003e — Extra padding around the ankle and tongue provides a premium, hotel-slipper-soft feel that keeps you comfortable through the longest training blocks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Blown Rubber Outsole\u003c\/strong\u003e — High-abrasion rubber zones deliver long-lasting grip and traction on roads and tracks alike.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStyle Number:\u003c\/strong\u003e 1204101B388\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGender:\u003c\/strong\u003e Men's\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Road Running \/ Marathon \/ Daily Trainer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit Type:\u003c\/strong\u003e Narrow (B Width)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpper Material:\u003c\/strong\u003e Fit Knit engineered mesh\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMidsole:\u003c\/strong\u003e Nitrogen-infused DNA LOFT v3 foam\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutsole:\u003c\/strong\u003e Blown rubber with segmented crash pad\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest For:\u003c\/strong\u003e Long runs, marathon training, everyday comfort\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWho It's For\u003c\/h3\u003e\u003cp\u003eThe Glycerin 21 is built for runners who prioritize maximum cushioning above all else. Whether you're recovering from a hard workout or logging big mileage weeks, this shoe delivers the plush, protective ride your legs deserve.\u003c\/p\u003e\u003cblockquote\u003e\u003cem\u003e\"Step into the Glycerin 21 and feel what 20+ years of cushioning innovation feels like — soft, smooth, and endlessly comfortable.\"\u003c\/em\u003e\u003c\/blockquote\u003e","brand":"Brooks","offers":[{"title":"Male \/ 40","offer_id":43455947145293,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Male \/ 40.5","offer_id":43455947178061,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Male \/ 41","offer_id":43455947210829,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Male \/ 42","offer_id":43455947243597,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Male \/ 42.5","offer_id":43455947276365,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Male \/ 43","offer_id":43455947309133,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Male \/ 44","offer_id":43455947341901,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Male \/ 45","offer_id":43455947374669,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Male \/ 46","offer_id":43455947407437,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Female \/ 36","offer_id":43455947440205,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Female \/ 36.5","offer_id":43455947472973,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Female \/ 37.5","offer_id":43455947505741,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Female \/ 38","offer_id":43455947538509,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true},{"title":"Female \/ 39","offer_id":43455947571277,"sku":null,"price":129.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/8586\/0685\/files\/wsxc1786327523511_2.jpg?v=1786298921","url":"https:\/\/treestwo.com\/products\/brooks-glycerin-21-mens-cushioned-nitrogen-marathon-running-shoe-1204101b388","provider":"Two trees","version":"1.0","type":"link"}