Rock Fall Rhyolite Internal Metatarsal Waterproof Safety Boots100% non metallic, with protective toecap, midsole and internal metatarsal guard, Rhyolite is highly robust and developed with specialist durability materials including FORCE10 components, an Activ Tex waterproof membrane, IMPACT SHIELD and R TEN thread. Additional Information: Water repellent full grain black leather stitched with R TEN abrasion resistant thread Protective fibreglass toecap, composite anti penetration flexi midsole and internal