Pattern Name:with hat | Size:XL S:body length:19cm(7.5″), chest:34cm(13.5″), neck girth:28cm(11″),fits for 1.5-2.5 kgs(3-5.5 lbs) M:body length:22cm(8.5″),chest:37cm(15″),neck girth:30cm(12″),fits for 2.5-4 kgs(5.5-8 lbs) L:body length:25cm(10″), chest:40cm(16″),neck girth:32cm(13″),fits for 4-5.5 kgs(8-12 lbs) XL: body length:27cm(11″),chest:43cm(17″),neck girth:35cm(14″),fits for 5.5-6.5 kgs(12 – 14.5 lbs) This is a very nice coat,our customer suggestions are to choose the larger size.Of course, by measuring the purchase is the best method.And is not suitable for large dogs. We highly recommend you measure your pet precisely with a flexible tape measure to ensure the best fit. Contact us if you have question. We are happy to help. You satisfaction and feedback is really important to us! Please leave a positive feedback if you are satisfied with our item and services. We wish you had a comfortable shopping experience! Standard Shipping: usually 5-10 business days. But there is no such option for us to choose in Amazon’s System but “17-28 days”. So you will find the Estimated Delivery Date too long. In fact it is not true. Most of our customers receive their package in 5 – 10 business days.