| For sizing, you may find the following a helpful general guide for a quick assessment. Length is the standard measurement for dog apparel. Length is measured from the base of the neck to the base of the tail. The numbers refer to inches. Remember, individual dogs and breeds vary. Contact a rep if you are unsure.
| Size | Length | Neck | Girth |
| XS | 7-9" | 7-9" | 11-14" |
| S | 9-11" | 9-11" | 14-17" |
| M | 11-13" | 11-12" | 17-19" |
| MM | 11-13" | 11.5-13.5" | 18-20" |
| L | 13-15" | 12-14" | 19-21" |
| XL | 15-17" | 14-15" | 21-23" | |