Backpacks have been taken to a new level of durability and function. Waterproof nylon and zippers.
Reflective trim and stripe for added safety. Durable construction that includes tough, Duraflex buckles.
Ergonomic fit throughout, with quick assist handle, roomy bags, and interior mesh for comfort. Dog BackPack -- Settles down High Energy Dogs.  Just put some items in the pockets and put on your dog, let him wear it around the house.  

Large and Medium size bags have two belly straps for comfort and stability. XXS – Small sizes have one belly strap centered at the bottom.

Breed sizing Example: XXS – Teacup; XS – Westie; Small – Beagle; Medium – Border Collie; Large – Labrador.