Jamie has a collar and a harness, i use the collar and lead for everyday 'boring' walks or walks where he will be let off lead in a secure area and the harness i use when i need to use his flexi lead as i knew the dangers of attaching a flexi to a collar and 'snapping' a dogs neck backwards however i didn't know that using a collar and lead could result in a damaged calcified spine.
i'm glad your boy is improving and hope you had a good christmas!
Sara x