Rogz offers modern and stylish designs, high quality stitchings with top notch finishings. Matching leashes, harnesses and collars are available for Rogz Lumberjack series. The size XL stands for extra large dogs. 

If You are stuck on choosing between a harness or a collar, I can only point out that you can guide the dog with more energy without doing any harm to his neck. At the same time, there's a tendency to heavily drag the dog with the harness, which is not good either. To avoid that, it would be the best to teach the dog to walk beside you.