Service Dogs spend many hours in their working harness, to keep them working at their best their comfort is a priority. We make these working dog harnesses for large dogs here in the USA by hand. Our large service dog vests hold up and stay looking nice for years to come. Machine Wash No Bleach and Hang Dry. We don't use foam or felt, which cause heat build up and rot from the inside. The Unique buckle design allows for one hand operation. The harness is complete with 2 side packs that are removable for easy access to documentation. 2 Patches - SERVICE DOG Do Not Pet. Utility Loop for Mini Flashlight or Poop Bag Holder. Trimmed in Retro-Reflective, free shipping is included.  We have unique sizing based on the build and weight of the dog to ensure a proper fit. We recommend you contact us for proper sizing to ensure the dog is comfortable. The base design of our working dog harnesses for large dogs is based on our BrilliantK9 Ergonomic Dog Harness, used and recommended by Dog Sport Enthusiasts across the country.

Please click HERE to learn how to properly measure for our large service dog vest.

We make these here in the USA by hand. Our large service dog harness will hold up and stay looking nice for years to come.

Machine Wash No Bleach and Hang Dry.

We don't use foam or felt, which cause heat build up and rot from the inside.

The Unique New Speed Buckle design allows for one hand operation.  Play the video below to see how it works.

MAGNET WARNING - The strong magnetic fields near a neodymium magnet can affect pacemakers, ICDs and other implanted medical devices.  Many of these devices are made with a feature that deactivates it with a magnetic field.  Therefore, care must be taken to avoid inadvertently deactivating such devices.

Chances are if your dog is a trim active dog the Lucy fit is the right option. If you have a bully breed with a shorter ribcage or a heavy bodied dog, then the original fit will work best.

Large - Lucy Fit: #1 Front 13" to 16" - #2 Girth 25" to 34" - Approximate Weight Range 50lbs to 65lbs - Breed Type: Boxer, Doberman Pinscher, Portugese Water Dog, Giant Schnauzer, Standard Poodle

Large - Regular Fit: #1 Front 12" to 14" - #2 Girth 27" to 37 - Approximate Weight Range 45lbs to 65lbs - Breed Type: English Bulldog, American Bulldog, American Staffordshire Terrier Description

Please remember that these working dog harnesses for large dogs are designed to fit further back and looser on the dog. If the harness is too far forward or tight it will not work properly and it will cause the dog to be uncomfortable. If you are at the end of a size range then go up to the next size. If you are not sure what size to buy you can always email us at info@brilliantk9.com send a picture of your dog from the side with height, weight and age, and we will be happy to help you out. Or you can check out the helpful videos below.

Watch this video first for an overall demo of the harness

Enjoy walking your dog in the BrilliantK9 Harness

Setting the harness up to fit your dog

Fitting the harness to your dog

What's in the Box

1 Lucy Large Service Dog Vest

2 Side Packs Closed = 7" wide x 3-1/2" Tall, Open 5-1/2" x 7" - Packs trimmed in Retro-Reflective

2 removable SERVICE DOG Do Not Pet embroidered patches

All of our harness orders are assembled and sewn at our facility in Lucas, Ohio as soon as we receive your order. It will normally takes 10-15 days to prepare and ship your order and we will notify you via email every step of the way.

Your payment information is encrypted with SSL and processed securely. We do not store credit card details nor have access to your credit card information.

Free US Standard Shipping (delivery in 10 to 15 days) on all U.S. orders above $2 with USPS First Class Mail - A tracking number will be provided.

Paid or Expedited Shipping - Orders with Expedited or Paid Shipping will be shipped per the method the customer selected.

International Shipping - Please note we are not responsible for customs or duties fees if they are applicable to your location.

We understand that there is no one tool that works for all dogs. We will accept a return for a full refund provided;
1. Email info@brilliantk9.com to notify of the return with a picture of the harness in NEW RESTOCK condition.
2. We receive the harness in NEW RESTOCK condition within 30 days after you received the harness.
3. The harness is received at the warehouse with the order number and customer name clearly marked on the outside of the package.  If a different name or company name is on the outside of the package, and there is no note inside with the name of the person that placed the order, there is no way for us to refund your order.

Product Guarantee - We guarantee against manufacturer defects for 7 years on our harnesses, we expect the harness to last the life of your dog.