MERRELL SIREN 3 VENT J033906 brand Merrell Melding a classic mukluk silhouette filter Dress Shoes Melding a classic mukluk silhouette with modern craftsmanship and minimalist design Insulating film of aluminum inside the base of the boot to prevent the cold from penetrating 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 density midsole with heel centering technology provides gender engineered alignment and comfort• Vibram® Megagrip®• 4 5mm lug depth• Weight: 1lb 4oz 564g