Runner's World Magazine's award for the Best Debut in the Winter 2010 Shoe Guide of the December 2009 issue! ; Strap yourself in and hold on to your knickers, 'cause you're bound to have a blast in a pair of these women's running shoes from Brooks. Features air mesh upper with synthetic overlay materials for breathability and comfort. Laces made from 100% recycled materials. Lightly padded collar. Fabric-lined with Engage sockliner. Full-length S-257 Cushsole. Durable, energy-efficient midsole compound utilized as an insole board for even more cushioning and flexibility. Rearfoot ST *HydroFlow technology. A dynamic viscuous fluid units for heel and forefoot to enhance midsole cushioning; attenuating shock with industry-leading dampening and comfort. Full-length BioMogo midsole, the world's first-ever biodegradable midsole for running shoes. DRB Accel. Shank-like thermoplastic device provides torsional rigidity to midfoot, enhancing support while allowing the heel and forefoot to act independently. Universal Sprung Platform on midsole. HPR Plus technology. *A higher durability, abrasion-resistant rubber outsole compound that wears longer. *Forefoot Cush Pod Construction with blown rubber forefoot outsole. Midsole and outsole components are engineered to set the foot in an efficient, balanced position from heel strike to toe-off, offering maximum cushioning and flexibility. Measurements: ; Weight: 9 oz ; Product measurements were taken using size 10, width B - Medium. Please note that measurements may vary by size.