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Ensure your dog travels safely & comfortably in the car with a Load Up Dog Car Harness!  This car restraint dog harness is easy to put on, comfortable on long journeys, and has been vehicle crash tested.


The Ruffwear Load Up dog harness is a travel dog harness designed to safely restrain dogs in vehicles by attaching to the existing seat-belt via a universal fit seat belt loop.

Not only does this harness keep dogs secure during sudden vehicle movements, it also secures them in the backseat so they can't reach and distract drivers.  Built with strength-rated hardware and components, the Load Up Harness has been successfully tested to withstand the rigors of a vehicle crash test.   

Although the harness restricts movement in the vehicle, it still allows your dog to stand up, sit or sleep as they please.  This safety dog harness is easy to put on and adjust, and is comfortable for dogs to wear during extended travel and can be left on for bathroom breaks and rest stops.  Note there isn't a separate back leash attachment on this leash so you will need a collar to clip a leash.

If you are keen to learn more about the testing & design of the Load Up Car Harness, click here for Ruffwear's Load Up Harness FAQs.

It's important to note that the harness is only for use in the rear passenger seats (not front seats).

PLEASE NOTE: there is no dog leash attachment point on this harness, so it isn't designed as a walking harness.  You may be able to attach a leash with karabiner to the back loop.


Available in 5 sizes.  To choose the best size, carefully measure around the widest part of your dog's chest/girth.
Dog chest measure in between sizes?  Choose the smaller size.
Size Chest/Girth Measure
XXS 33-43cm (13-17")
XS 43-56cm (17-22")
S 56-69cm (22-27")
M 69-81cm (27-32")
L 81-107cm (32-42")

Check out the video further down on this page to learn how to fit and install The Load Up Harness.

Key Features

  • Strong, secure harness for car travel 
  • New Easy-to-use metal slide buckle
  • All metal, strength rated hardware
  • Universal seatbelt attachment
  • Padded and comfortable for extended wear and can be used during rest stops
  • Dynamically tested at MGA Research Corp (a US National Highway Traffic Safety Administration contracted test facility) under conditions outlined in US Federal Motor Vehicle Safety Standard 213 - more info
Ruffwear Load Up Dog Harness on Peyton who is wearing a size XXSRuffwear Load Up Dog Harness on Lucky who is wearing a size XSRuffwear Load Up Dog Harness on Baya who is wearing a size SRuffwear Load Up Dog Harness on Millie who is wearing a size MRuffwear Load Up Dog Harness on Rio who is wearing a size L

    Washing Instructions

    Secure fasteners and hand wash with mild detergents.   Air dry away from direct sunlight.   


    • Shell: 300 denier polyester
    • Closed-cell foam
    • Polyester knit mesh lining
    • Nylon webbing
    • Forged Anodized Aluminum 6061 Slide Buckle

    Customer Reviews

    Based on 1 review
    Sue B.
    Game changer Harness

    We live our new Harness Finn is no longer pulling & walking is a pleasant experience 😀