PLEASE NOTE:Please make sure to measure your dog for accurate sizing before purchasing to ensure the perfect fit.Your baby usually wears size S doesn't mean all size S will fit him/herIf any of the measurements are between two sizes,PLEASE CHOOSE THE LARGER SIZE. LIGHTWEIGHT&WARM:Made of waterproof material,windproof and snow proof. Let your dog enjoy playing outside. CONVENIENCE:Constructed with Zipper Closure,easy to put on and take off. DURABLE&STURDY:All the stitching has been done strongly.2 D-rings on the back can be attached to the leash and create a harness function. If you have any unsatisfactory with the product quality and service,please contact me first.We will try our best to solve your problems as soon as possible.