Marc Tetro zip pouch - Westie NYC Liberty | Medium

To help choose the correct size Coat, Skivvy or Knitwear for your Pooch, please measure your Dog's girth & spine length, then compare to the sizing guide in the product description.

To determine your Dog's spine length please measure from under where the collar sits, along the spine, to base of tail (as example below). Once you have your pooch's spine length measurement, then please compare your measurement to the products LENGTH for the best size match. If you're unsure it's best to go up one size.