This is how most dogs travel.

It’s not safe.

In a crash, your dog doesn’t stay in the back.
Free Grey Collar with Harness Purchase.

Most harnesses don’t actually keep your dog in place.

Why the Defender System is different

Unlike clip-in harnesses, this system anchors your dog in place.

Most harnesses attach in one place.
This system controls movement at two points.

In a crash, force needs somewhere to go.

In a 30 mph crash, a 40-lb dog can generate over 1,000 pounds of impact force.

That’s like a vending machine hitting the back of your seat.

1,000 pounds of force.

Our two-tether system spreads crash forces across two anchor points instead of concentrating them on one.

Two-tether system for real control

  • Keeps your dog stable while driving, and in a crash

Tested to the same standards as child car seats

  • Built for real protection, not just convenience

Used every day.

  • No complicated setup, no guesswork

Free crash replacement. Built to last.

There’s a difference between being clipped in… and being protected.

Free Grey Collar - Limited Time

Order your Crash Safe Defender Harness System within the next few hours and we’ll include a matching grey collar (up to $80 value) at no extra cost.

Backed by our 60-day fit guarantee and free shipping.

Successfully Crash Tested
Made in Canada
Free Crash Replacement Warranty
Why don't you have your crash test videos up?

We passed our crash tests using dummy dogs we do not own. We are a small company who can not licenses the videos for marketing purposes. We take safety seriously and knew we needed to pass the tests and as we grow get the videos.

What size do i need?

Generally in Pounds:
12lbs and under - X small
15lbs -24 lbs Small
25lbs - 49 lbs Medium
50lbs -80 lbs Large
80 and up - X- Large
Have measurements? - Take the sizing quiz at the bottom of this page!

What if I order the wrong size?

If you're worried about getting right size. place your order and use code FREECUSTOM

Andrew will reach out to you and guide you in your measurements. If you ordered the wrong size, will we refund you or charge you the difference in price AND make your harness custom to the measurements given at no extra charge.

One of the perks of making it ourselves is our ability to make it right. every time.

What if I get in a crash?

We pay the shipping back to us for the harness involved in the crash, and send you a new harness. No charge to you.

Even minor collisions are valid for this program. We want our harness to absorb the force not your dog. That's kind of the point. So any crash could cause damage and we will replace your harness to maximize safety.

Why the Defender Harness over everything else out there?

We are horribly biased but here is why.

  1. We have passed the same tests as child seats.
  2. Our two tether system ensures you do not have to weave a strap through a harness and spend minutes buckling in.
  3. Our two tether system also give you full control. Allowing you to be connected to your dog and/or the car at all times.
  4. Our made in Canada quality lasts a lifetime. 10 years after our first harnesses went out and we still have originals in use.
  5. We were once looking for what we ended up making. We know you will love it for years to come.
Anything else?

We are able to give out our numbers and talk to you, not because we have unlimited time, but because we only want to be found by people who are looking for the right solution made sustainably. If that is you, we're so happy you found us and we can't wait to be a part of your daily safety.

Want to feel the difference first?

Put on the Harness

The Defender Harness is worn like a regular walking harness, so your dog stays comfortable and secure before you even get in the car.

Connect the Tethers

Attach the Lower Tether first to keep your dog stable in the seat, then connect the Upper Tether to the seatbelt to engage in the event of a crash.

Drive with Confidence

Your dog stays secure on every ride, while still able to sit or lie down naturally, so travel feels calm, controlled and comfortable.

We couldn’t find a manufacturer equipped to take on the level of complexity required to build this system properly.

Over 100 individual steps go into every Harness Safety System.

That’s why we manufacture in Canada, using certified materials at our own small-batch production facility.

Find Your Perfect Fit

Answer three quick questions to find the right harness size for your dog.

Choose the range that best matches your dog's weight.

Measure around the widest part of the chest, just behind the front legs.

Measure around the base of the neck where the collar normally sits.

Your dog needs an XS harness

XS

XS harnesses are custom-sized after purchase to ensure a perfect fit for your small dog. We'll reach out to confirm measurements and customize your harness at no extra charge.

Your dog needs a Small harness

Small

Based on your selections, a Small harness is the right fit. This size works well for dogs 13–25 lbs with a body measurement of 20–23.5 inches.

Your dog needs a Medium harness

Medium

Based on your selections, a Medium harness is the right fit. This size works well for dogs 26–50 lbs with a body measurement of 24.5–29 inches.

Your dog needs a Large harness

Large

Based on your selections, a Large harness is the right fit. This size works well for dogs 51–79 lbs with a body measurement of 28–33 inches.

Your dog needs an XL harness

XL

Based on your selections, an XL harness is the right fit. This size works well for dogs 80 lbs and up with a body measurement of 33–39.5 inches.

Let's find the perfect fit together

Your selections suggest a custom fit would be best. This is completely normal! Please fill out our sizing form and we'll contact you directly to ensure a perfect fit. We offer free customization to make sure your harness fits just right.