DUO Direct — Sizing, Fit & Adjustment
Everything you need to get a perfect fit on your dog
Unboxing & getting started
First time with your new harness? Watch the video for your line below.
DUO Essentials — Unboxing
For Essentials buyers — off the hang card
DUO PRO — Unboxing
For PRO buyers — premium packaging
Measure your dog
Same measurements for Essentials and PRO. Two numbers: base of neck + torso.

Harnesses have a lot of room for adjustment. If unsure about size, use weight to decide.
PRO runs the same measurements in a heavier-duty build. PRO sizes start at SM — for dogs under ~20 lbs, choose Essentials XS.
Recommended for Adapt: escape artists, sighthounds, and narrow-headed dogs (Greyhounds, Whippets, Italian Greyhounds) — measure torso carefully, as long-bodied dogs often size up from their weight.
How to size adjust
Dial in the straps to your dog's measurements before the first walk.
Works for both Essentials and PRO
Works for both Essentials and PRO
How to fit
Getting the harness on, off, and the leash attached.
Works for both Essentials and PRO
Putting the small Direct on Choco