"Primary Collars" Adjustable Hardy Reflective Dog Collar. Crafted for durability, comfort, and safety for dogs of all breeds, our Adjustable Hardy Dog Collar is made with super-strong 1200-denier upcycled polypropylene. This dog collar is as durable as it gets. The 1" web collar features a simple seatbelt-style snap closure, ensuring hassle-free wear. With its user-friendly adjustment slide, this collar is fully customizable for the perfect fit for any dog—large, small, or any size in between. Plus, the D-ring makes leash attachment a breeze. We added two rows of integrated reflective thread to add visibility for evening walks, keeping your best friend safe and seen. Day or night on dogs small or large, this Adjustable Hardy Dog Collar is a paw-some choice for any pet parent.