Measure length from between shoulder blades to base of tail, while pup is in a standing position (see line "A" in the image above).
Select the vest size that is equal to or less than this measurement.
The straps under the pup's belly and across chest can adjust widely. Pups do not need a larger vest size until the vest length falls short of the pup's waistline/does not pass ribcage (see line "B" in the above image).
Pups will spend majority of puppyhood in Small and Medium size vests. The Large size vest will be most necessary for mature males (70+ pounds).
Example: Puppy measures approximately 17" from shoulders to base of tail. I will order the S/16" vest. I will order the next size up once S vest no longer reaches past the pup's ribcage.
Small(S) Vest = 16"
Medium(M) Vest =18"
Large(L) vest = 22"
Extra Small(XS) vests are included in all outgoing puppy kits when Raisers receive a new pup.
Co-Raisers share one vest for each pup.
When you receive a new vest, the previous vest is expected to be returned to GDF/your Puppy Advisor within 2 weeks. Remote Raisers will mail vests back to GDF. Raisers who attend local classes may return vests in person to their Puppy Advisor or by mailing to GDF. Each vest has a tracking number. Vest #s provided to Raisers are logged and returns will be monitored.
GDF Mailing Address:
Attention: Puppy Department
Guide Dog Foundation for the Blind
371 E. Jericho Tpke.
Smithtown, NY 11787