This personalized adjustable dog collar is made of waterproof, ultra-strong webbing, which measures approximately 5/8" wide and approximately 1/8" thick. You can choose a different pattern for your plaque to attach to your necklace in the personalization box. If you would like a size variation that is not listed, simply indicate it in the personalization box. This necklace is available in your choice of colors: - Stainless steel - Zinc alloy with matte black finish - Gold Contact us to personalize your order