Brooks - Glycerin 3 (White/Charcoal/Cloud Grey/Clementine) - Men's: An explosive blend of HydroFlow®, e-1(tm) and S257&trade cushioning technologies deliver a highly cushioned, yet well-balanced ride for the neutral to mild pronator looking for great cushioning with just the right amount of support. HydroFlow ST-XL(R) contains dynamic viscous fluid units for heel and forefoot enhance midsole cushioning. The patented silicon-based system dampens shock at impact, dynamically disperses fluid at impact, and cushions, stabilizes, and rebounds your stride. Full length S-257(tm) midsole resists compression, rebounds more quickly than standard EVA and is more durable.li>Dual Density DRB Accel(tm) enhances tunable torsion of the midfoot. The rigid device is designed to promote natural movement from heel to forefoot. Engineered Hyper-Pod(tm) configuration offers maximum stability and flexibility that work with bio-mechanical flex grooves. High Performance Rubber, a high-density carbon rubber for increased traction and durability. Air mesh upper. Strobel construction. Shoe weighs 12.5 oz.