Duke seems to like my harness and it has his approval. At 250 pounds I always like him to be happy. Of course he always is. Hand made adjustable harness. Fits Dukes 50 inch chest very nicely. This one is made for comfort on a gentle giant like my baby girl's dog Duke. Metal Hardware to assure it is strong enough for his bulk. Ebay has a very nice return policy but 10 years before they thought about getting one mine was this. You don't like my product for any reason return it for exchange or refund. Harness comes in Medium, Large, X large and XX large. 1 Inch webbing. However if you need it bigger we will be glad to work with you. 

Medium Size (body) 21 to 30. (Neck) 18 to 27 inches 

Large Size (body) 24.5 to 36.5 (Neck) 21 to 33 inches 

Ex Large Size (body) 27 to 43 (Neck) 25 to 37 inches 

XX Large Body XX 32 to 54 Neck 30 to 50