Full Grain Oiled Cowhide Leather 6” Shaft Steel Toe Military-grade Stockman Heel Silverado Collection Dual Density Sole Handcrafted with a careful attention to long-lasting comfort and quality, the Silverado by Abilene 6” Lumberjack men’s work boots are a great lace-up option. The 6” shaft is made with full grain oiled cowhide leather with a double-stitched, split reverse welt that adds a touch of rugged style. The military-grade polyurethane comfort midsoles and insoles make these boots perfect for all-day, everyday wear, while the soles and steel toe offer high levels of protection that meet ASTM safety standards.