SIZE GIRTH TEE LENGTH COLLAR XS 25.4cm - 33cm 20.3cm 27.9cm S 33cm - 40.6cm 25.4cm 30.5cm M 40.6cm - 48.3cm 30.5cm 35.6cm L 48.3cm - 55.9cm 33cm 40.6cm SIZING TIPS Your chest / girth measurement is the best way to choose a size. On our chart the smaller measurement is the loose fit and the larger is a firm fit. Our raglans are super stretchy so a firm fit will still have good movement. - Extra fluffy dogs please measure above the fur. The Raglan tee length shown is the actual length of the tee. Our tees are meant to be cropped fit. If your dogs length is shorter than the tee length it will overhang the tail. For the best fit ropped is the way to go. Our raglan tees are cut wide in the collar to make them super easy to get on even boof head breeds while still fitting super comfy on skinny necks collar measurement won't effect the fit. A little loose is fine.