Learn how to measure your pup and choose the best fit.
How to Measure Your Pup
Chest Girth
Measure around the widest part of your pup’s chest, just behind the front legs.
Neck
Measure around the base of the neck where the garment naturally sits.
Back Length
Measure from the base of the neck to the base of the tail along the spine.
Weight
Use your pup’s current weight as a secondary reference. Chest and neck measurements should remain your primary guide.
Fit note — Keep the tape comfortably snug, never tight. Use the chest as your guide, and size up when between sizes or for thicker coats.
Style Notes
Find My Fit
For a more personalized size recommendation, enter your pup’s chest, neck, back length, and weight using Find My Fit on any product page.
Frequently Asked Questions
What if my pup is between sizes?
Choose the size that comfortably accommodates both the chest and neckline. If your pup has a longer back, prioritize chest and neck. For a more personalized recommendation, use Find My Fit on the product page.
Are all styles cut the same?
No. Each dear thomas style is designed a little differently. Some styles are more fitted through the body or neckline, while others offer more room through the chest or a longer back length.
What if I’m still unsure about the fit?
Use Find My Fit on the product page for the most personalized recommendation. If you’re still unsure, contact us with your pup’s chest, neck, back length, and weight, and we’ll be happy to help you double-check the fit.
A Note on Fit
Because every pup is shaped differently, measurements are intended as a guide rather than a guarantee of fit. For a more personalized recommendation, use Find My Fit on the product page.