ALTERNATIVE TRAINING COLLAR VS. MARTINGALE
WHAT SIZE? AND HOW TO USE

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XXS
Small Chihuahua, toy breeds
3-6 lb. dogs
XS
Jack Russell Terriers, Llaso apso, Bichon Frise, Maltese, Min Pins
6 1/2 - 13 lb dogs
SMALL
Westies, small Terriers, small Terrier mixes
Neck circumference - 10 - 12"
MEDIUM
Aussies, Border Collies, Shelties (most small/medium dogs)
Neck circumference - 12 - 14 1/2"
MEDIUM 1
Boxers, Weimarainers, Smaller Golden Retrievers, Smaller Labs, Smaller Shepherds
Neck circumference - 14 1/2 - 16"
MEDIUM 2
Medium Shepherds, Medium Golden Retrievers, and Medium Labrador Retrievers
Neck circumference - 16 - 17 1/2"
LARGE
Large Shepherds, Large Golden Retrievers, and Large Labrador Retrievers
Neck circumference - 17 1/2 - 19"
X-LARGE
Large Mastiffs, St. Bernards, (Most very large headed dogs)
Neck circumference - Over 19"