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IDC®Longwalk Y-Harness

SKU: 19LWH-*
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Availability: Out of stock


Product Description


Designed for the
longest journeys

The IDC® Longwalk Y-Harness is specifically designed for extended walks, so when you get away from the city you’re not the only one to put on a convenient and healthy gear; you can give your dog the same comfort, too.


The IDC® Longwalk is designed to actively adapt to your movements. The three elastically attached rings react to both the dog’s and the owner’s motion, so Duo-Flex® makes sure that the harness is always comfortable even during the longest walks.

Neck circumference
Chest circumference
26-34 cm / 10-13 in
40-52 cm / 16-20.5 in
4-8 kg / 9-18 lbs
28-40 cm / 11-15.5 in
44-60 cm / 17-23.5 in
7-12 kg / 15-27 lbs
38-46 cm / 15-18 in
49-66 cm / 19-26 in
9-15 kg / 20-33 lbs
38-54 cm / 15-21 in
56-76 cm / 22-30 in
14-20 kg / 31-44 lbs
43-60 cm / 17-23.5 in
66-86 cm / 26-34 in
18-25 kg / 40-55 lbs
50-65 cm / 20-25.5 in
70-90 cm / 27.5-35.5 in
26-33 kg / 57-73 lbs
55-70 cm / 22-27.5 in
80-96 cm / 31.5-38 in
32-41 kg / 70-90 lbs

Active Dog,
Active Harness

The Duo-Flex® system allows the shoulder straps to constantly adapt to the dog’s movement on each step, so they only sense the harness when you want to stop or hold them back.

And your dog

Thanks to the active parts, the harness is so comfortable you don’t need to take it off even when you let your dog loose as they practically don’t feel it’s on them.

The longer you walk,
the more it benefits

The leash is also integrated into the Duo-Flex® system so when your dog suddenly jerks on it or you decide to pull them back, the active rings ensure a more gentle, dampened effect. The longer you walk, the more grateful your shoulder will be for the reduced tugging force.

Depending on the workload, the active components start moving gradually, in sync with each other.

The Duo-Flex® system is active both when the leash is taut and when you let your dog roam freely without the leash on.

Attention! The shoulder straps of Y-harnesses, when adjusted too loosely, compress the shoulders during a gallop or pull, thereby impeding movement and reducing lung capacity.
If the Y-harness is too small for the dog, it squeezes the neck, and the shoulder straps have a negative effect on breathing, oesophagus and neck veins.
Please pay attention to the careful selection of the size and the adjustment of the harness.


IDC® Longwalk combines several innovations and developments into a harness that is truly dog- and owner-friendly. This superior quality is based on our 20 years of experience in harness design and manufacturing.



Red Dot and German Design Award-winning design and colours

Adjustable and openable straps – you can put on and take off the harness without having to pull the dog’s legs through

Hook-and-loop chest pads – the harness can be adjusted to the dog’s build and size

Neoprene lining and special internal structure – perfect fit and form

Rubberized handle for a secure grip

Reflective elements

Interchangeable custom patches

Bag attachment options

Easy to put on and use

Integrated Duo-Flex® system

Made in the EU using German materials

Continuous load testing

Product video

Customer Reviews (46)

JosReview by jos
Overall rating
Nog maar een paar keer gebruikt voor een lange wandeling. Nog een paar keer proberen zeker en aanpassen. Het geeft zeker een beter gevoel voor de hond en hij is nogal een gevoelige en ervaart het positiever als de powerharnas.

Jos (Posted on 24/09/2022)
Love itReview by Biskit_the_labrador
Overall rating
Whilst I must admit that this harness is somewhat expensive but I could immediately tell that my labrador retriever was very comfortable in it. Indeed whereas with my previous harness (I was using a "cheap" unbranded one until my lab reached full size) my lab was somehow reluctant to wear the harness, now she immediately comes and allows me to put the Longwalk Y-Harness on easily. (Posted on 20/09/2022)
reduz os puxesReview by Rafael
Overall rating
Produto muito confortável para o co. Fácil de ajustar e permite todos os movimentos. Reduz os puxes. E todo o material de muito boa qualidade (Posted on 24/05/2022)
Reduce la presiónReview by Francesco
Overall rating
Muy cómodo para mis perras, incluso lo uso para trabajar muchos ejercicios, les facilita mucho el correr y las anillas les evita daños en las articulaciones cuando ocurren tirones imprevistos que todos sufrimos. También reduce la presión en tu hombro. (Posted on 24/05/2022)
Respeta las articulacionesReview by Jessica
Overall rating
Muy buena calidad. Se nota que es resistente. Aunque a mi perra no le gustan nada los arneses se nota que respeta sus movimientos y articulaciones. (Posted on 24/05/2022)
Muy cómodoReview by Antonio
Overall rating
Muy cómodo para el y para nosotros y también con su identificación con su velcro. (Posted on 24/05/2022)
Comfortable for my Shiba InuReview by Sunfish
Overall rating
I bought a size small for my average sized, slightly chunky, Shiba Inu, and it fits perfect. He weighs about 28 lbs and has the mature rolls in his neck at almost age 4.
I like how both sides of the neck/shoulder pieces adjust, as well as the both sides of the chest piece.
We live out in a rural area, so every walk takes us up over rocky and uneven terrain. The harness gives enough to keep him comfortable at the same time keeping me in full control. This is important as we live in an area with both prey and predators.
I am very happy with the Julius K-9 Long Walk Harness.
(Posted on 24/05/2022)
Great harnessReview by Sarge
Overall rating
Very easy to adjust to fit the dog and very comfortable for them. The “elastic” control system on the harness makes it ideal for longer lead walks, which we needed for the coastal walks around us. (Posted on 24/05/2022)
Good quality Review by Alex
Overall rating
Very good quality.
My shiba inu love long walk and this is perfect for this (Posted on 23/05/2022)
Best harness ever for active dogsReview by Walter
Overall rating
We were looking for a safe harness to be used during long mountain trekking. Traditional harnesses are discomfortable for our boy, limit movements and cut his hair. All another story with this Julius K9 IDC HARNESS: it supports any movement, doesn’t compress the joints and doesn’t damage the hair. Our border collie acts as if he is not wearing anything during our mountain adventures. (Posted on 23/04/2022)
Great product!Review by Ines
Overall rating
Great harness, both very soft and strong! Very easy to put, follows every movement of our dog perfectly and it doesn't disturb her in any way.
While connected on a leash, the harness does not slip aside or turn around the dog, fits always right and it stays always on the right position, no matter which side our dog turns on.
Very good and easy adjustment system with an quite big range between minimum and maximum, both on chest and around the neck.
Since our dog is still growing and has not turn his adult size yet, we are sure that our L size harness will perfectly follow her body changes.
Thank you!
(Posted on 14/04/2022)
Great for long walks/trails Review by CNunes
Overall rating
It is very resistant, waterproof and fits perfectly. This harness is very good, since the dog does not pull like with the other harness, he stops just before the leash runs out. We have a 10meters leash for our trails and the harness is perfect since it protects the dog (seems very comfortable and our dog accepts it very well) and allows for perfect control even at a distance. The handle is also good to pick up the dog in different situations like going into the jeep, crossing a creek, …. For our Scottish Terrier we got the S/Mini size, the price is a bit high compared with the other harness. The delivery was very fast and the service very good. (Posted on 27/12/2021)
Good productReview by Daniele
Overall rating
I have many Julius harnesses ; all are very good products.
This one is very useful for long walks .
(Posted on 20/12/2021)
Great product, durable and a perfect fit for the dog :) Review by MM
Overall rating
Great product, durable and a perfect fit for the dog :) A bit on the high side where price is concerned, but if it lasts long, you would certainly get the value for money. I tried different harnesses before this one and by far this is the best I got. (Posted on 31/10/2021)
The best harness for dog ever!Review by Mirco
Overall rating
The best harness for dogs ever! Robust and made with quality materials. Absolutely safe for the dog, adjustable to adapt perfectly to its growth. The only flaw is that it is little reflective, it would be useful if it were especially when walking in the evening! I already had two, this is the third because my puppy is grown. I will not buy any other brand, although the price is a bit too high worth the expense. Absolutely recommended. (Posted on 17/07/2021)
Excellent quality, very comfortable for dogsReview by Jonas
Overall rating
Top quality in all regards (Posted on 15/06/2021)
Quick delivery and good gearReview by Ric
Overall rating
Very nice gear. My dog is very comfortable when we go trekking, and so am I. (Posted on 14/06/2021)
Good quality and great service Review by Mare
Overall rating
My 9 year old Border Collie loves to pull on the le (Posted on 05/06/2021)
Very Good, beautiful and functionalReview by Carlotta
Overall rating
It was all perfect.
My dog ad I love it.
I have a quite big American Satfforshire that's tall and about 30kg and I ordered an L.
The size was godd but at the limit. (Posted on 12/05/2021)
Perfect Review by Odin
Overall rating
Our dog loves the harness. It sits perfectly on his body, doesn’t disturb him in his movement and he can not get out of it. It’s of good quality and works well in every weather. (Posted on 29/03/2021)

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