THIS SHOE IS FOR: The Glycerin 21 is perfect for runners seeking super-soft cushioning for supreme comfort. The plush internal fit and soft, stable transitions keep runners surrounded by super-softness. This Brooks Glycerin 21 has been granted the APMA Seal of Acceptance. NEUTRAL SUPPORT: Provides neutral support while offering the maximum amount of cushioning. Ideal for road running, cross training, the gym or wherever you might want to take them! Predecessor: Glycerin 20. Look for the Brooks Glycerin GTS 21 for the same style with added support. SUPREME SOFTNESS: The ultimate in softness with even more super-soft nitrogen-infused DNA Loft v3 cushioning, optimized to be lightweight, responsive, and durable for plush comfort. PLUSH IMPROVED FIT: The plush feel of an internal stretch bootie surrounds your foot and moves and expands with your stride. The newly engineered warp knit upper is breathable and allows for a flexible, accommodating fit while staying soft against the foot. SMOOTH, STABLE TRANSITIONS: The broad platform stabilizes your foot and promotes smooth heel-to-toe transitions for a supremely soft on-the-run experience.
