Fi Series 3 Compatible Martingale Collar With Buckle

  • Current Processing Time: 2-3 weeks

Regular price$54.95
Due to this collar being custom made to your measurements & color preferences we cannot accept returns or exchanges. Please double check your measurements & feel free to email me with any questions prior to ordering at

Fi tracker is sold separately. If you don’t already have your own, purchase your tracker HERE. Use our code: SEAFLOWER20 to save $20 off the activation fee from your Fi Series 3 purchase. 

Our Fi Compatible collars add more fun to your dog's active lifestyle! These martingale collars feature our unique bright and vibrant designs and includes authentic Fi end-links to attach to your Fi tracker. 

These Fi Series 3 compatible martingales with a buckle are made "over the band" style. This style gives your Fi device extra protection, & allows the collar to still be functional without the Fi tracker attached.

  • Made from strong, durable polyester webbing
  • UV, Mildew & Water Resistant
  • Easy to clean when it gets dirty
  • Available in 3/4", 1", & 1.5" collar widths
  • Available in a variety of our exclusive and unique designs
  • Due to the length of the fi tracker & added buckle to the martingale the smaller size collars will only have a couple inches of adjustable range

Looking for a Fi compatible martingale without the buckle? Click Here

How to measure
Buckle Options

Stainless Steel: Known for its strength, durability, & low maintenance attributes. Perfect for all those salty beach adventures, & the best option if your pup is hard on their gear.

Black Metal: A great option for upgrading the look of your collar. Made from heavy duty solid brass & zinc alloy hardware. This makes it rust & corrosion resistant. As all coated hardware will show wear overtime, our black metal is PVD treated which produces a durable finish.

Safety & durability is our top priority at SeaFlower Co. We use high quality materials and durable, thoroughly tested hardware for all of our products. Our products are made with ruff play in mind, but no pet gear is indestructible. Please inspect your equipment regularly for any signs of wear and tear & replace when necessary. It is the buyer’s responsibility to determine what gear is appropriate for their dog’s size, strength, and activity level. SeaFlower Co is not liable for any injuries or damage that may occur as a result of use.

Customer Reviews

Based on 20 reviews
Natasha Harper
Great collar

Having a buckle makes putting the collar on super easy. My husband disagreed with my decision to buy a new collar but after using it he agreed it was worth it.

Rylee Nichols
Amazing products!

I’ve ordered a few collars now from SeaFlower Co and I’ve been nothing but extremely satisfied! Great customer service, timely delivery and great product!

Vicki Cropley
Love this!

I only purchased the Fi because your collars are designed to have the martingale collars with a buckle. We hate sliding out pups collar over her head at night (she sleeps with it off). This makes having the Fi possible for us!
We absolutely love it!

Carol Leong
It’s perfect!

Lili looks great in her new collar! It arrived in a timely fashion in good shape. Her FI was easy to attach. We are very happy with our choice.


This collar is so beautiful and so well made! It looks amazingly beautiful on my Jingles and with the Fi 3 perfect!

We love seeing your pups styling in our gear!

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