Wonder Walkers are the best! We have a mini husky with a tiny head and EXTRA fluffy neck so good fitting harnesses and collars are hard to come by. Wonder Walkers are easily adjustable, with a ton of sizes and colors to choose from. Our big pup is all legs and a skinny mini. He is a bit leash reactive so the front harness clip is a game-changer if he gets jumpy on walks.
I would 100% go with a Wonder Walker. It is comfy for the dog and helps them resist pulling. I have a 15# chihuahua mix, but we've been using the WW since he was half this size. My friend with a larger dog also uses the Wonder Walker. They come in all sizes. Extra super cool bonus - MADE IN SEATTLE. You can't go wrong!