Lightweight and durable PU foam-filled midsole Strong, durable and wear-resistant, and distinguished by an aggressive design. You can find all these elements in the new SOLID GEAR Onyx family of trekking boots. The seamless upper with CORDURA reinforcements guarantees excellent durability, while reflective elements ensure visibility. A polyurethane-filled midsole along with a stiff and strong rubber outsole provide excellent traction on uneven surfaces. The Boa Fit System guarantees a perfect fit and easy donning of the shoe. Upper: CORDURA canvas Outer sole: Rubber Midsole: Poured PU Insole: PU foam for high breathability Feature: Boa Fit System Cut: Wide Sizes: 36-48 Safety standard: EN ISO 20345:25XL S3, HRO, SRC Protection: Fiberglass protective instep and soft metal-free toe contact area