The #152 is part of the new line of Blundstone heritage boots that offer sophistication through traditional craftsmanship and a sleek, tailored look. This all premium leather Chelsea ankle boot is Goodyear welted to offer a waterproof construction. It can be resoled anytime to extend its life. The all leather outsole is covered outside by a rubber sole to offer more slip resistance. Model #152 Gender Unisex Colour Black Upper Material Premium Leather Fastening type Pull-On Lining-Material Leather & Textile Insole Xtreme Comfort Contoured EVA with XRD® Technology Serie Heritage Series Sole Unit Heritage Sole Material Leather with TPU-outsole Removable Insole YES WHAT MEANS GOODYEAR_WELTED? Goodyear welt construction, simply put, is a strip of leather sewn around the bottom of the shoe and attached to both the insole and upper to hold the shoe together. The frame can then be easily removed, allowing the sole to come off without damaging the rest of the shoe - meaning it can be replaced again and again. The Goodyear World Method dates back to 1869 and is named after Charles Goodyear Jr. who invented the machines used in the construction process. Welted shoes are designed to last a long time. If you take care of your shoes, they will last for decades. As long as you take care of the upper of your shoes, both the sole and the heel can be replaced by your shoemaker.