| Size | Length | Chest | Neck | Breed Examples |
| XS | 7-10" | 8-11" | 6-9" | T-CUP BREEDS |
| S | 11-13" | 13-16" | 8-12" | CHIHUAHUA, POODLE BICHON FRISE, MALTESE |
| M | 13-15" | 16-19" | 11-14" | POMERANIAN, DACHSUND, WESTEY |
| L | 16-18" | 19-22" | 13-16" | MINI AUSTRALIAN SHEPPARD |
| XL | 18-21" | 21-25" | 14-18" | PIT BULL, BOXER |
| XXL | 22-27" | 26-33" | 18-22" | LAB, RETRIEVER, GERMAN SHEPPARD |
| XXXL | 26-30" | 34-40" | 22-26" | GREAT DANE, ST. BERNARD |
