Please follow the size guide carefully to ensure you get the correct size. If you have any questions or need help on sizing please don’t hesitate to contact me, because although I will do exchanges, being precise the first time saves us both a load of work and headache. Chest and back measurements are what are needed for the Hoodies and Pajamas but if your pups measurements are different and don’t fit into the size guide or if your ordering for a giant or large breed dog that ISN’T a great dane please contact me with all measurements from the image to the right so I can alter the item to fit your pup correctly. Also if you need one size bigger or smaller for your great dane than what is offered please contact me and I can accommodate your request.