MERRELL Women's Siren 3 Ventilator #J81952Designed specifically for women, this hiker is built with Q FORM 2 stability technology and a Vibram Megagrip for confidence no matter the terrain. FEATURES Mesh and TPU upper Webbing loops for secure fit Hyperlock molded TPU heel counter for security Bellows tongue keeps debris out M Select FRESH antimicrobial agents reduces shoe odor Kinetic Fit Tri removable contoured EVA insole provides light support to all three arches of the foot Q FORM 2 dual