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Zappos.com is proud to offer the Brooks - Adrenaline ASR 6 (Titan/Black/Deep Royal) - Footwear: Nothing gets your blood pumpin' more than a challenging running workout. Washed-out trails or stormy weather won't slow these Brooks trail running shoes down a all. If anything, these Adrenaline ASR 6's were made for these conditions. ; Features an All Season Running (ASR) shoe made for any condition on any surface. ; Moisture-managing *Element mesh upper with water-resistant, hydrophobic foam package and internal support saddle for performance comfort. *Superior microfiber construction to provide weather protection in a light, supple, quiet fabric that doesn't sacrifice breathability, durability or comfort. ; Laces made from 100% recycled materials. ; Lightly padded collar. ; Fabric-lined with a removable profile sockliner. ; Full-length BioMogo midsole, the world's first-ever biodegradable midsole for running shoes. ; DRB Accel technology. Shank-like thermoplastic device provides torsional rigidity to midfoot, enhancing support while allowing the heel and forefoot to act independently. ; Full-length S-257 Cushsole. Durable, energy-efficient midsole compound utilized as an insole board for even more cushioning and flexibility. ; Progressive Diagonal Rollbar (PDRB) . Bio-mechanically engineered to allow for progressive pronation control and creates smoother transitions from the midstance phase to the propulsion phase. ; Rearfoot ST and Forefoot *HydroFlow technology. Dynamic viscous fluid units in the heel and forefoot to enhance midsole cushioning; attenuating shock with industry-leading dampening and comfort. ; Forefoot Stable Pod construction on outsole. Midsole and outsole components are engineered to set the foot in an efficient, balanced position from heel strike to toe-off, offering maximum stability and responsiveness. ; HPR Plus and HPR Green technology. A highly durable, abrasion-resistant rubber outsole compound that wears longer. Made with dispersed silica for premium wet-dry traction and skid-resistance. Plus, it's more environmentally friendly. ; 12.00 oz. ; Product measurements were taken using size 8.5. Please note that measurements may vary by size.