Size:L Scheppend Halloween Fleece Pumpkin Costume for Dogs Fancy Jumpsuit Cozy Sweatshirt Pet Party Clothes Easy to take on and offSoft and warm perfect for snugglingFit great,easy movement for your dog No pull at the neck,plenty of “rear end” roomPerfect for every day wear, sleep time, normal party and photos Size Chart: S (Back length:7.87 inch, Neck girth:9.05 inch, Chest girth:12.59 inch;Recommended for dogs weigh 2.7-4.4LB)M (Back length:9.84 inch, Neck girth:10.23 inch, Chest girth:14.56 inch;Recommended for dogs weigh 4.4-6.6LB)L (Back length:11.81 inch, Neck girth:11.41 inch, Chest girth:16.53 inch;Recommended for dogs weigh 6.6-9.3LB)XL (Back length:13.78 inch, Neck girth:12.59 inch, Chest girth:18.50 inch;Recommended for dogs weigh 9.3-13.2LB)XXL (Back length:15.75 inch, Neck girth:13.78 inch, Chest girth:20.47 inch;Recommended for dogs weigh 13.2-19.8LB) Measuring Your Dog for a Perfect Fit 1.How to measure your dog?There is a picture to show how to measure your dog above,please check it.2.Your baby usually wears size S doesn’t mean all size S will fit him/her.3.If any of the measurements are ‘between’ two sizes, choose the larger size.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.4.Take each measurement a bit loosely.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)