<b>Small: Neck length: 7.0-11.5 inches;Chest length: 10.0-13.5 inches<br> Medium: Neck length: 12.0-18.5 inches;Chest length: 20.0-26.5 inches<br> Large: Neck length: 19.0-25.5 inches;Chest lengh:29.0-33.5 inches<br> </b>   <b><br>*Measuring Your Dog for a Perfect Fit*</br></b>   <b><br> 1.How to measure your dog? There is a picture to show how to measure your dog above,please check it.</b></br>   <b><br> 2.You looked at one size chart and found that your dog is a size small. But that doesn't mean he/she is a size small for all the clothes. Different designers and manufacturers use their own size charts. So the measurements given in a size SMALL by manufacturer ""A"" will be a size XS in manufacturer B's size chart. Don't buy a particular size because that is what you always buy in a pet shop or online store. Always look at the size chart for chest girth and length and confirm the size before you commit to buy.</b></br>   <b><br> 3.If your measurements are toward the upper end of the range given for a particular size,you may also want to choose the larger size, as you may also wish to do for heavily coated dogs to accommodate all that fur.</b></br>   <b><br> 4.Take each measurement a bit loosely, so there will be room for your dog to move and breathe, but not too loose. (the measurement for Belly Bands is the exception -- it needs to be a bit snug) Please measure carefully before buying and email us if you have any questions about fit before you bid or make a purchase.</b></br>