Dog Training Full Advice

Ok, really its just called a "Martingale" collar - the "glorious" part was added by me. Because I love and use this type of collar so much!

A Martingale is worn around the neck like a traditional flat-buckle collar, but unlike the traditional kind you have to put it on by slipping it over the dogs head - since it doesnt normally have a clasp that you can unlink to turn it into a flat strip. The leash attaches to the ring thats linked to the little of the two loops.

The two clips shouldnt touch when pulled

Because you have to slip it over the dogs head, a Martingale collar normally needs to be tightened up after it is put on. The correct fit is loose enough so you can still fit several fingers between the collar and the dogs neck - which is much looser than a traditional collar - but tight enough so that when you pull the leash, the two rings attached to the larger loop shouldnt pull all the way together and touch. Pictured here is a proper fit: the rings pull closer together but only about halfway.

The Martingale collar was originally designed for dogs with little heads and thick necks - like Greyhounds - so that it wont slip off the dogs neck. But its uses and benefits are more than just for dogs with small heads.

Partial chain Martingale

First of all, because it tightens up when pulled like a slip/choke collar, it can be worn very loosely without slipping off. This makes it more comfortable for many dogs to wear.

Yet unlike a slip/choke, if sized correctly a Martingalge wont actually choke the dog. Slip/chokes tighten like a noose and can be dangerous if the dog is running or left unattended; the Martingale doesnt run this risk.

Additionally, unlike a traditional collar that pulls on the dogs neck in only one direction - usually up against the trachea - the Martingale closes tight like it is gripping the dogs neck all around. This makes for a safer, kinder, and gentler communication via leash-tug that the dog can feel more quickly. It is also safer for little dogs with delicate or weak necks, as the pressure is distributed around the entire neck. And I also believe that by gripping the neck all around the Martingale more closely mimics the sensation of being picked up by the mouth of the mommy dog (theyll often pick their young puppies up by the scruff of the neck). So the communication is felt on a more innate level and most dogs are more responsive to it.

An upside of the Martingale thats minor  but deserves mentioning is that unlike the E-Z Walk Harness, the Gentle Leader, and other patented brands, "Martingale" refers merely to that unpatented shape and construction of collar, and so comes in a zillion colors, patterns, materials, and varieties. Whereas the patented systems only come in black, red, and maybe a few other colors, you can find a Martingale that suits you and your stylish pup to a T. I should note here that the addition of chain link to the top ring of the collar isnt just an aesthetic choice and is something I generally recommend avoiding, as it makes the tightening of the collar slower and more cumbersome.  Most of the Martingales available in retail stores seem to have that chain link (see above pic), but if you search online you can find pure fabric or leather Martingales in just about any design you can imagine.

The only real downside to the Martingale is that it is not the ideal collar for all dogs. For some reason most of the Dobermans Ive worked with - maybe because of their gangly long necks? - have continued to pull on leash with the Martingale and we saw a drastic improvement with the front-clip (E-Z Walk) harness. But in general this is the collar I slip on a dog and recommend as the starting point, to begin training and assess his responsiveness and special needs. If more control is needed we move to the Gentle Leader; if pulling is the dogs only issue we move to the E-Z Walk Harness; and so on.

So heres the recap of my favorite collar, the Martingale:

Pros

1. Can be worn all day, loosely and comfortably
2. Wont slip off the dogs neck when pulled
3. Scared dogs cant wriggle out of it
4. Can pull a dog forward "through" its fear
5. Makes for kinder, gentler communication through the leash 
6. Safer for the neck and trachea
7. Dogs respond more innately to the gripping sensation

Cons

1. Not as supremely safe for running or offleash play as a harness
2. Not as much control over the head as a head halter
3. Some dogs (especially those with long necks) pull against it.