Comfort Trainer Head Halter for Dog Told a lot of friends about this. Here's what it looks like
DIY Dog Head Halter in 15 seconds (or less!) - YouTube
The Best Training Collar for Dogs that Pull: How to Use a Head Halter on Your Dog (The Humane Society of the United State)
Mexican Head Halter, Figure 8, Synthetic
Petco Black Non-Pull Head Halter for Dogs >>> Continue to the product at the image link.
Tellington TTouch Training webstore. Special-edition green thundershirts, plus a variety of no-pull harnesses and head halters.
Head halter, synthetic, w/martingale ring
Comfort Trainer Head Halter -- You can get additional details at the image link.
Infinity Lead No Pull Head Collar and Leash by Bold Lead Designs / alas, only for dogs over 20 lbs.