Dunham - Terrastryder Low (Green) - Women's: Upper consists of waterproof materials and sealed seams. Vibram outsole unit (with exclusive Waffle Stomper multi-directional lug pattern) is made of Vibram Supertrek compound rubber. Dual TPU plates sandwiched between the midsole and outsole. The rear plate features a stiff compound and provides torsional stability for heel protection; while the front plate is more flexible, providing a balance of protection and comfortable forefoot mobility. Asymmetrical forefoot and midfoot stability is achieved through the use of stability wings that feature full midfoot support through the arch and increased forefoot flexibility. Customized cast metal hardware with an anodized brushed aluminum finish. Direct contact ABZORB in the heel and forefoot provides superior shock absorption and cushioning. Lightweight compression molded EVA midsole. Tectonic Tongue with special foam package features three modules with flex points that correspond to the three main flex areas of the foot, allowing the foot to flex naturally and results in evenly distributed pressure throughout the integrated lacing system. Asymmetrical Comfort Cuff collar with cushioned ankle pockets. SL-1 Sport Last shape provides a more athletic fit. Lasted external heel counter is wrapped and integrated with the lacing system to secure the heel. 360 fit design considers not only the length and width but also the volume; Weighs 13.7 oz.