This one looks like a puppia but costs less:
Walk EZ soft mesh harness:
Green Walk-Ez Soft Mesh Harness
This one looks like a Puppia but it does not give enough measurements, might have to call:
Freedom Harness:
Walk-Ez Soft Mesh Harnesses- Many Colors!
and you can even find several Puppia-like harness on one of my favorite shopping spots, Overstock.com --
Harness Search Results from Overstock.com