Turn any collar into a smart collar.


Customer Reviews

Based on 5 reviews
Tasha (Pittsburgh, US)
Great product, with a tiny flaws

We have it snapped to our dog's Atlas harness, so it's one less thing around her neck and we never forget to take it on a hike. It works great, but I wish it had (somehow!) solved the irritating rattle of the Fi and that it was easier to access the Fi for charging. But an amazing v1!

LW (New York, US)
Finally an attachment to a harness!

The fi snap is perfect and is the reason I got another fi collar! I had been trying for years to attach the fi device to my dog's harness and there were never great solutions. I love his harness and he doesn't wear a collar, so the fi collar was always a hassle. The fi snap is well made and so easy to attach to anything! It looks good and allows me to keep my dog's fi tracker on his harness, which he wears whenever we leave the house. This product is a game changer!

Kevin M. (Tel Aviv, IL)
Complete setup

So this collar checks all the boxes, with being light weight, ability to use FI, and quality built. Im spending too much on these products.. all have not let me down yet.

T.I. (White Lake, US)

We have a rescue Dobe who came from a horrible situation (Georgia - Feb/2023) and wanted to make sure he lives his best life going forward. We never want to lose him so bought the Fi tracker, but that meant we were up to two collars and a lot of tags to wear. When I asked Atlas about something that would fit his Martingale or did they make a Martingale, they said they were coming out with this and I jumped on the pre-order and it's everything I could have hoped for! Small, fits perfectly, snaps tight and comes with all the hardware so I didn't have to cut the Fi collar to use the tracker unit. This thing is perfect! If you want to keep the collars to a minimum and still be able to use a Fi (which is also an awesome little thing!) get this. You won't be sorry. Trust me ;)

R.K. (Lawrenceville, US)
Must Have!

I wouldn’t buy a Fi tracker until I could attach it to my Lifetime Lite collar and sure enough Atlas Pet Company came through! It attaches super securely and doesn’t move around at all.

30 Day Returns

Free returns & exchanges

Free Repairs

even if your pup destroys it.

Handmade in Colorado

in small batches.