We recommend a harness which has the following features:
Y-shaped front for comfort
Front and back lead clips
Handle fitting across your dog's back.
Embark | Mokcci | ThinkPet
are all brands which make harnesses with the features above.
(link to Amazon)
We recommend a lead which has the following features:
Clips at both ends
Several rings along its length
HALTI
makes this type of lead in varying colours and thicknesses.
(link to Amazon)