Nitrogen-infused with DNA LOFT v3, we unboxed 📦 the new brooksrunning Gylcerin 21 featuring 2mm more top-of-the-line soft cushioning and a new soft and breathable knit upper. Available now in-store at select Fleet Feet locations and online at fleetfeet.com. #unboxing #brooksrunning #fleetfeet #glycerin21