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Dog Collar Black

4.81 out of 5 based on 32 customer ratings
(32 customer reviews)


Our magnetic dog collar contains a powerful Central Reverse Polarity magnet and the canvas finish is designed to be both comfortable and durable for your pet.

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Our magnetic dog collar contains a powerful Central Reverse Polarity magnet and the canvas finish is designed to be both comfortable and durable for your pet.

Available in two sizes, small and large. Small fits neck circumference up to 45cm and large fits up to 65cm. The small is 16mm wide and the large is 20mm wide.

If required the collar can be trimmed and heat-sealed with a naked flame to prevent fraying.

Please note: These collars are not designed to be attached to a leash and an additional collar must be used for this purpose. The D-ring provided is to be used for an identity tag only. These collars can be worn by microchipped dogs.


Additional information


Small – Up to 45cm, Large – Up to 65cm

32 reviews for Dog Collar Black

  1. 5 out of 5

    Have had the collar for over a year now, I saw an improvement in my cavalier within a couple of weeks (he had laxating patella surgery on both legs). He is now able to run around like a normal 4 year old dog and rarely takes pain medication. These collars are amazing and I have recommended them to many friends.

  2. 5 out of 5

    (verified owner)

    I have used this collar on my Staffordshire Bull Terrier for nearly two years, what a difference, he has stopped limping. Would recommend this collar.

  3. 5 out of 5

    (verified owner)

    My 12 year old Labrador has always been very active until this summer. I have worn a bioflow Elite bracelet for about 12 years and found it beneficial when I had Polymyalgia, so bought a collar for my dog in September. After three weeks, he appears to have improved and continues to do so. I found my improvement to be gradual as well and managed to come off Prednisolone which I’d been on for 5 years.. Highly recommend these products for both animals and humans..

  4. 4 out of 5

    (verified owner)

    Have had collar a couple of weeks now and it seems to be working. Delighted, no limping and able to jump up on couch again (not allowed on couch, that lasted all of three weeks!)

  5. 4 out of 5

    (verified owner)

    I have a 12 year old Parson Jack Russell and after reading the reviews I bought her a Bioflow collar (my husband has a Bioflow bracelet and swears by it). In the last few weeks we have seen a great improvement in her movement and she now wants to go for walks … previously she would hide and refuse to go anywhere so I would definitely recommend it!

  6. 5 out of 5

    Our dog Molly is now a 13 year old Labrador. We purchased the Bioflow collar 5 years ago after been told she would need surgery on her bad joints as she could no longer walk well. Since having the collar she has made a miraculous recovery! Even the vet was shocked at her immediate improvement. She has been on no pain medication for five years now. Fantastic job!

  7. 4 out of 5

    (verified owner)


  8. 5 out of 5

    (verified owner)

    We’ve only had the collar for a few weeks, but I am confident it is helping my 11 year old lurcher. He had started to get arthritis, but having been diagnosed with kidney failure 18 months ago, the vet was reluctant to put him on appropriate drugs which would affect his kidneys further. I was very keen to find him alternative treatment, and since wearing the Bioflow collar, he has regained his energetic, almost puppyish, bounce when out on walks. It is a wonderful relief to see him so much more comfortable! It’s a shame the vet wasn’t the one to recommend Bioflow!?

    I was hugely impressed with the service from Bioflow – the collar was ordered in the afternoon and arrived in the post the next day…and this was in the run up to Christmas!

  9. 5 out of 5

    Bought my 2 springer spaniels new collars for Christmas and already I have noticed my older 11 year old spaniel is more active. She has severe arthritis and other medical problems. They already had the bio flow collar and not knowing what the life of the collar is I decided to replace them, but as stated above she has definitely got more bounce since I replaced the collar. The younger spaniel (8) also has arthritis but not to the same degree as the older dog and she is like a one year old. Would recommend to anyone to try.

  10. 5 out of 5

    (verified owner)

    Been using the collar and bed since Christmas for my 10 yrs old lab. She’s ruptured her ligament in her knee. We’ve noticed a big difference in her and the stiffness has reduced. Getting my old girl back

  11. 5 out of 5

    (verified owner)

    Recommended by dog groomer for my dog Oscar who has had a bad limp. Since using it he has got better so think of trying myself for a bad back.

  12. 5 out of 5

    (verified owner)

    Have bought for my almost 13 year old Springer Spaniel – she has been wearing for two weeks now, and I have seen a difference, the main difference at this stage is that she is much happier in herself and I feel as the weeks go on I will see a significant difference in her mobility too.

  13. 5 out of 5

    (verified owner)

    My 13 year old darling is stiffening up significantly and I’m loathe to put her on long term medication. I thought I’d give the collar a go and was thrilled to see an immediately improvement. She is still limping slightly after getting up from a long rest but there is a noticeable difference. Thank you!

  14. 4 out of 5

    (verified owner)

    Quite good. We use the collar in the day and the bed at night. Seems to work well. Bed is much better value for money. I fail to see why the collar needs to be so expensive. Not a brilliant design.

  15. 4 out of 5

    (verified owner)

    I was recommended to get a collar for my old girl (15 1/5yrs old) to help her recovery after an injury she sustained. After 1 day of her wearing it she seemed to me to be moving better and after 1 week she was trying to run with the other. Now after 1 month she now trots along happily and manages to play ball albiet still a little wobbly, but fantastic for a dog of her age.

  16. 5 out of 5

    (verified owner)

    I bought this collar for my 9 year old Rottweiler who suddenly went lame. My vet couldn’t find what the problem was. After three weeks of wearing it her lameness is massively reduced and she’s back chasing Rabbits!

  17. 5 out of 5

    (verified owner)

    Bought a collar for my 11 year old staffy who was a bit arthritic in his back legs. After wearing it for a couple of weeks he no longer lifts his leg during a walk. The collar was recommended to us from a friend so I thought I would try it out. He now has a spring in his step.

  18. 5 out of 5

    (verified owner)

    Bought this collar for my 10 year old Labrador who has arthritis in her shoulder. Since wearing the collar her stiffness has improved and she is enjoying her walks much more. We are able to go for much longer walks which has not been possible for some time. We are both feeling much fitter!

  19. 5 out of 5

    (verified owner)

    Excellent service and my 10 year old dog is showing daily improvement

  20. 5 out of 5

    (verified owner)

    I used one of the bioflow collars many years ago on an ageing lurcher and was amazed at the effect on him, he lived to be 17 1/2 and was without many of the ailments that elderly dogs seem prone to for most of those years. I have now put one on my 9 year old malamute after noticing him slowing down a little and am delighted to see that he is back to his usual naughty self again!

  21. 5 out of 5

    I bought this collar for my 13 year old Collie cross who has developed arthritis in both hips and knees and was struggling with pain. We had been unable to walk him for three weeks and the vet had said to take him home and say goodbye (he was also falling over a lot). I purchased this collar while on holiday and on my return put it on him – that was the Saturday, by Tuesday my daughter was able to walk him a short distance up the road. On Thursday, Buster had managed to climb on the bed for a morning cuddle something he has not done for 18 months and has been out for a longer walk this morning. The vet considers that it is the anti inflammatory drugs which he has been on now for three weeks. Not me – it has to be the collar and I have recommended it to two of my friends who have similar problems with their dogs. We now have our dog back, happy and more active than he has been in months.

  22. 5 out of 5

    (verified owner)

    My labrador has arthritis and has had operations on both elbows. I purchased this collar as a replacement for one I bought years ago for my previous dog, as the plastic clasp had cracked. My dog is now 8 but he is still enjoying an active outdoor lifestyle and has loads of energy. I have always found Bioflow collars to be of benefit to my dogs and always wear a Bioflow bracelet myself.

  23. 5 out of 5

    (verified owner)

    I bought this collar for my 10 year old Yorkie who was having problems getting up & down the stairs & on the bed but after just 3 weeks he’s jumping around like a puppy, it’s made such a difference & to know he’s happier is just brilliant..

  24. 5 out of 5

    My border collie (14) has been having back leg issues and struggling to get up and down, often his legs would splay when trying to get up. After reading the reviews I decided to buy the collar to see what effect of any this would have on him, to my amazement the reviews did not lie, I’m not saying my dog is up and down like a yo-yo but the difference is remarkable and he seems so much happier in himself. Thank you bioflow.

  25. 5 out of 5

    (verified owner)

    I wasn’t sure about this, but my 12 year old German Shepherd was struggling when we were going out for walks, we have had it a month now and we have 5 mins ball chasing when we go out.

  26. 5 out of 5

    (verified owner)

    Must say I was dubious to begin with but as the vet was talking steroids and maybe eventually orthopeadic surgery both scary predictions for his future. The reviews gave me encouragement to give it a try. Toby is a rescue dog yorkie 8-9 years old not neutered, his coat so matted and filthy dirty to the skin, knowing his past his diet was dreadful and so was his life generally mainly locked in a kitchen no bed, toys or food bowls and little or no human or animal contact not really housetrained. He has been wearing the collar for around a month and well what can I say other than brilliant since purchasing this within a week toby seems so much better no longer stiff in the mornings or bunny hops on his back legs on walks, when he ran he would lift his one back leg but no longer does his general gait is alot better he always had a haunched spine which is no longer visible, he is calmer, so much happier and confident in himself, now ready to play rather than growling to warn off other dogs, a proper social mr wagg tail, he must have been in alot of pain bless him I am very very impressed and Toby is very very happy boy.

  27. 5 out of 5

    (verified owner)

    Bought one for my 13year old lab,since he has been wearing it
    He is a bit more lively so I would recommend this collar to
    Anyone who has a dog that is getting a little old,

  28. 5 out of 5

    I bought this collar a year and a half ago for my now 15 and a half year old Labrador cross spaniel. She got hit by a car and was very on and off lame. Within a couple of weeks of having this collar she was even better than she was before the accident and still thinks she’s a puppy now despite her age. I highly recommend this product and believe that it has made a huge difference. My almost 16 year old dog still runs around every day like a young dog.

  29. 4 out of 5

    (verified owner)

    Easy to fit, its early days but my greyhound seems more mobile now. The magnet does keep rotating round his neck though and I understood it was meant to sit at the bottom near his pulse point.

  30. 5 out of 5

    (verified owner)

    I bought a collar for each of my dogs recently, unsure whether they would have an effect or not. My one dog has niggling hips and knees which have of late caused her issues after long walks. It was heart-breaking to see her want to go but then to suffer afterwards. My terrier had cut down the walks that she wanted to go on with us too. I did not want to commit either dog to a life of medication so opted to try a collar. I am incredibly pleased to report that both dogs have improved dramatically in just three short weeks, I wish I had bought the collars before. My terrier is back to full gusto with her walks and the lab/husky is back to her puppy state despite rising 9. I am so pleased that they have their personalities back long may it continue!!

  31. 5 out of 5

    (verified owner)

    Our dog showed signs of back pain, but when taken to the vet shows nothing serious and prescribed with pain killers. He’s been wearing the collar for a few weeks now and showing a great improvement. He is much livelier and moves much more easily without using any drugs.

  32. 5 out of 5

    (verified owner)

    Have had the bioflow collar now for three weeks and our 9 year old Springer Spaniel Toby is a lot happier – eating and exercising better. Long may it continue.

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  • Our magnetic dog collar contains a powerful Central Reverse Polarity magnet and the canvas finish is designed to be both comfortable and durable for your pet.

Why BioFlow

  • Unique Technology

    Central Reverse Polarity Magnets

  • Knowledge and Expertise

    Over 25 Years Of Experience

  • Class 1 Medical Device

    Independently Verified

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