Sizing Chart: Head Muff
The Standard sizes are designed to accommodate most breeds with typical proportions.
The Long & Lean sizes are designed for dogs with very long necks and small heads such as the Greyhound, Whippet, and Borzoi.
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| Body Type | Size | Head Muff Length | Head Circ | Weight |
| Standard | XXS | 7 in | 9 - 11 in | 5 - 15 lb |
| Standard | XS | 9 in | 12 - 13 in | 15 - 25 lb |
| Standard | S | 10 in | 13 - 15 in | 24 - 40 lb |
| Standard | M | 12 in | 15 - 16 in | 40 - 70 lb |
| Long & Lean | S | 13 in | 12 - 13 in | 20 - 40 lb |
| Long & Lean | M | 14 in | 15 - 16 in | 45 - 90 lb |
| Standard | L | 14 in | 17 - 19 in | 70 - 90 lb |
| Standard | XL | 16 in | 20 - 21 in | 90 - 170 lb |
| Standard | XXL | 16 in | 22 - 25 in | 90 - 170 lb |