Selecting a comfortable work boot can be a difficult process. You have to take into consideration certain safety features, such as slip resistance, shock resistance, steel toe vs. composite toe, waterproof, and insulation. Now I have Tımberland Pro Men's Endurance . It has durable features such as a safety-toe, non-slip rubber outer sole, plus, anti-fatigue technology make these work boots stand up to just about anything. Not only are they comfortable and great for those with back and knee problems, the 8” shaft offers substantial support for your ankles. However, I would suggest selecting half a size larger than your average shoe size, as they tend to run small