3″ Rigid Collar



The 3” Rigid Dog Collar is a thick, strong, heavy duty tactical K9 collar made of mil-spec materials and climbing rated hardware. Designed for extra large breed dogs, this durable collar is made for the toughest working dogs and won’t break under load.

Crafted primarily for Personal Protection and Schutzhund (IPO) Working Dogs, the rigid design allows the handler to use the body of the collar to apply pressure to points behind the ears to manually "out" the dog from a bite if it becomes unresponsive to commands.

3" Wide Rigid Body

Our 3" wide rigid design provides support to the dog's neck preventing possible injuries and its rigid nature gives you the option of using it to manually "out" your partner from a bite.

ISC Klick-Lock Buckle

The Klick-Lock Buckle is redundant, meaning both sides have to be depressed to release the buckle and the release buttons are recessed which prevents accidental unclipping.

Stainless Steel V-Ring

Our black coated stainless steel V-Ring allows the handler to use any attachment option available including large diameter carabiners.

Loop Attachment Panel

A large Loop Panel allows the handler to attach identifying patches as well as accessories directly to the dog's collar.


Please note these collars are for extra large breed dogs, typically 110lbs or more. If you are unsure if the collar will work for your dog please email customer service and we will advise test measurements. 


Trying to use an old collar to measure is often unreliable and usually results in a new collar that does not fit. Therefore we recommend using a tailor’s tape to measure (the same as if you were getting measured for a suit). If you do not have a tailor’s tape you can use a piece of string that you then measure along a tape measure. Simply wrap the tape/string around the dog’s neck where the collar would normally sit, pull it “tight”, then make sure you can get a finger underneath—that measurement will determine what size is best…

Neck Measurement


Extra Large: 22-26in (56-66cm)

Extra Extra Large: 25-29in (63-73cm)

Sizes Over 29in (73cm) Available By Request


ISC 1 3/4 ” Klick-Lock Buckle rated to 4,000 lbs

1 3/4″ Mil-Spec Webbing rated to 7,000 lbs

1 3/4″ Steel V-Ring: rated to 6,000 lbs

Mil-Spec Scuba Webbing

10″ x 3″ Loop Panel



Support Guides

What size collar do I need?

How do I adjust a Rigid Collar?

What type of collar do you recommend?

Which of your collars have the option to add a handle?

Customer Reviews

Based on 6 reviews
Dan L.
Extremely impressed with the quality

I am extremely impessed with the quality of the 3 inch rigid collar and fits my 2 year old mastiff very well. The name patch I ordered, however, the lettering has already started to peel off. I am equally impressed with with the defender riot lead. Ì also like all off the customization options offer. I am planning to order another collar for my other dog and a harness.

Awesome for big dogs!

This collar looks great in our Cane Corso. Finally a collar that doesn’t look to small on him! This is a heavy duty collar and very well made. It’s not the easiest collar to get on, but after a couple weeks use it’s getting easier. Overall happy with this purchase…I think it will last our guy a lifetime!


Excellent collar fits perfect for my Cane Corso. Also everyone that sees it asks about it when we're out training.

Lionel D.S.

Very good product

Brandon H.

Did not fit
Too long of wait for the price
Extremely difficult to put on
Beautiful collar otherwise

Thank you for the review.

Please note that these are very large collars (at almost 1.5 lbs and .25' thick) for the largest breed dogs. As silly as it sounds, we often recommend that customers 'create a collar' the size that they would like to purchase—for example, cutting a strip of paper 3' wide at the length needed and wrapping that around the dog's neck will give you a good idea of how big the collar will actually be.

Our collars measure true to size, meaning the interior circumference of the collar is the measurement listed as the size (as this will correspond to the neck circumference). We highly recommend taking an actual neck measurement (some customers try to use an old collar and the results are often inaccurate). To measure, just use a tailors tape (same that is used to measure for a suit). If you do not have a tailors tape you can use a piece of string that you later measure along a tape measure. Just wrap that around the dog's neck where a collar usually sits, and make sure you can get at least 1 finger underneath—that measurement will be the size you need to order. If you are between sizes just let us know and we can advise the best way to proceed.

With regard to the wait time, please note that we list our lead times on the product page, on the checkout page, and on the order confirmation email. We make every effort to meet or exceed those lead times. We know that it can be frustrating to wait an extended period of time and we appreciate your patience.

To put the collar on you will note there are 3 keepers. These keepers are to keep any excess of the collar tucked in (think of a belt in reverse). Please note these keepers are for aesthetic reason only, therefore you do not need to use all or any of the keepers. We recommend experimenting to see what works best for you. For example, you my find just using the furthest keeper is sufficient. Or you may find using the furthest keeper (1) and the closest keeper (3) is sufficient and you can skip the middle keeper (2). There is really no right or wrong way to do it. Since each dog has a different neck size, everyone may use a different set up. However, using fewer keepers (if applicable) often makes the collar easier to put on and take off. Please note the webbing will also 'relax' over time and will make the processes easier as well.

If you have any other issues with the collar please reach out to our support team and we will be happy to help as best we can. Thanks!

Frank S.
3" Ridgid Collar

Totally totally Awesome Collar. Extremely great workmanship and design. Well worth the cost. I'd definitely recommend getting one for a large dog. Mines a Bull Mastiff. Great fit too.