"Not only is the product absolutely incredible, but the customer service is also top tier. I purchased the medium for my Frenchies but with their big chest and small waist, I thought the small would better fit them. I contacted the seller who trusted me enough to send me TWO small harnesses and a free return label for whichever I decided to return. Now I can take my Frenchies on long walks without putting pressure on their delicate necks with regular collars and other harnesses." - Rachael