I make all the outfit myself, from the restricting legwear to the spring-loaded tail to the leather harness. Its made especially to look a certain way, and be comfortable for long-term use... puppy days get very long!
I'm currently experimenting with a head harness and muzzle fittings.

Hardware
I made the leg braces so that once they're locked on its impossible to stand up.
Its outrageously erotic to think that if the postman came up the drive and saw me, I could not stand up and mumble away some excuse for my kink... I'd have no option but to remain on all fours and be presented as a ridiculous parody of a poodle, jingling my bells and wagging my tail...
(he'd probably run quite fast when I tried to bite his ass tho, lol!)

pic below of my new black outfit, riding on Trainer Bryans double sulky!