Sizing tool
What size for my pet?
Two honest questions. Pick the one you're asking.
Breed + age gives a prediction range. It tells you what to plan for and what to measure — it is not a promise about your individual pet.
Enter what you measured. We turn each number into a size using a stated rule, and tell you what to double-check against the product's own chart.
Measure to the skin, not the coat. Chest girth = widest part of the ribcage, just behind the front legs.