"Primary Collars" Adjustable Dog Collar with Vegan Leather and Crystal Bling. Crafted from pet- and earth-friendly vegan leather, this is a dog collar that’s as practical as it is playful. Embellished with two rows of sparkling crystals set in a channel, our Adjustable Dog Collar is meticulously edge-stitched and fully lined, so it's durable and more than a little chic, if we say so ourselves. Five buckle holes allows up to 4" of adjustability for the perfect fit on any dog or puppy. Plus, the nickel-plated hardware, including the D-ring leash attachment, shines in a silver finish, adding a dazzling hit of style to all that sustainability.