Fi Series 3/3+ Compatible Collars
- Current Processing Time: 3-8 business days

- Made from high-quality, durable, eco-friendly polyester webbing
- UV & water resistant
- Quick drying to resist mold & mildew
- Easy to clean to keep your collar looking its best
- Reinforced stitching with heavy-duty thread
- Adjustable Fit: By including your dog's measurements, we can create a comfortable, secure fit that's just right for them. This is especially helpful if they're between sizes or still growing, so we can make any necessary adjustments to our standard sizing.
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Available in a variety of our exclusive and unique designs to match your pup’s style
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Include authentic Fi end-links to attach to your Fi 3/3+ tracker & 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.
If you dog is a puppy and is expected to grow more, please add a note to your order at checkout, and we will size the collar accordingly so your puppy has room to grow into it
Fi 3+ models: For optimal accuracy with the new Series 3+ Behavior Monitoring features, Fi recommends the in-line design worn around your dog’s neck. The Series 3+ will still work with the overlay design for GPS tracking and fitness. Click Here for in-line Fi style collar
Want to personalize your buckle? CLICK HERE (Just purchase our plastic buckle collar style and add the buckle engraving upgrade to your order- Only available for our 3/4" & 1" collar widths) **We can't engrave on COBRA® buckles
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 3/3+ purchase.
Want to add a matching leash? CLICK HERE


Stainless Steel: Known for its strength, durability, & low maintenance attributes. Ideal choice for all those beach-loving pups and those who are rough on their gear.
Black Metal: A popular choice for upgrading the look of your collar. While it's a stylish option loved by many, please note that coated finishes can wear/chip over time.
To keep your collar looking its best, we recommend hand-washing it with mild soap and warm water when needed. For stubborn spots, use an old toothbrush brush or dish brush to gently scrub the area. Rinse thoroughly and allow to air dry and then it will be ready for your next adventure.
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.
Collar fits amazing and having the Fi tracker on the outside of the collar fabric seems much more comfortable for my pup!
I am in love with this collar!! It is BEAUTIFUL, and looks so good on my pup! Will definitely be ordering from this company again (once I decide which collar to order next, there’s like 6 more designs I want! 😂) quick turnaround as well, received it 3 days after ordering.
Nice collar
Luv the collar and will order more
I had such a hard time picking just one collar and will be back for more. Besides being beautiful, the Fi collar attachments stay locked, something that did not work on a biothane collar. The biothane was so thick that they failed to stay closed. Love this collar and love this company!!