Belleville Chrome 6in Black Side-Zip Boots (Tr916z) Leather Rubber sole Smooth, cowhide leather and Destination P nylon mesh Side zip with molded security overlay StreetNav outsole has a unique cleat and lug design for superior traction in multiple environments Aero-Spacer breathable, hydrophilic lining Low profile lace-lock hook and "Ghilly" style lacing system provides a secured and customized fit