Bests & Worsts Reviews from Amazon

I received this jacket today and the size Medium was too large for my 12-pound miniature dachshund, even though her measurements are the same as the size chart indicated for the size. Like another reviewer noted, an incorrect size sticker had been placed over the original size symbol on the sewn-in tag. In my case, an "M" sticker had been placed over the "L" (Large) symbol imprinted on the tag. When I measured the jacket, the widest part of the chest was 20 inches, consistent with size Large from the size chart. I'm returning the jacket for an exchange and will hopefully get a true Medium. I will likely rate it higher once the correct size arrives as the jacket is well made, and will keep my smooth coated dachshund warm during the cold months. I contacted Gooby Pets directly and told them of the sizing errors and they were very appreciative. UPDATE 11/22/2015: I received the exchanged jacket today, size Medium in purple. Again, a "M" (Medium) sticker had been placed over the "L" (Large) symbol on the sewn-in label, the chest measures 20 inches instead of 16 inches for a true size Medium and it's too big. I'm hoping that the problem is only with the purple jackets and will try ordering another color in size Medium. UPDATE 11/30/2015: The 3rd size Medium jacket in blue that I re-ordered was appropriately labeled "M" but still measured 20 inches across the chest (I was so tired of returning jackets that I gave this last one to a friend and it fit her 18-lb Coton well). I think the problem is with the size chart that Gooby includes with the product description. I then ordered a size Small and it fits my 12-pound mini dachshund well. However, in the 3rd photo, you can see that the chest measures almost 17 inches across, which according to the size chart would be a size Medium, not a Small. In the 2nd photo, the original "M" size imprinted on the label was replace with a "S" (Small) sticker. It appears that the size chart is incorrect. Dimensions for size Small are really those indicated for Medium in the chart, and dimensions for Medium are really those indicated for size Large.