Series 3 / 3+ Fi compatible martingale collar / custom colors shelter donation and made from a happy

and made from a happy accident

and support healthy skin and ears

balanced skin environment

and designed for easy handling on neighborhood walks and everyday outings

so we leaned in

Series 3 / 3+ Fi compatible martingale collar / custom colors shelter donation and made from a happyMade to order in Austin Solid brass hardware Compatible with Fi Series 3 & 3+ A Fi compatible version of our classic martingale collarcrafted with durable nylon webbing, solid brass hardware, and genuine Fi end links for a secure, everyday fit. The martingale loop gently tightens with tension and relaxes again when the leash softens, supporting comfort while helping prevent backing out. Designed for dependable tracking and everyday wear, wherever your