What is a collar attachment tag? These tags feature a flexible silicone band that easily stretches over your collar, lead, or harness, allowing you to position the tag flush with the product. BullyBillows offers stunning collar and lead attachment tags in eight beautifully finished colours. You can also choose from 14 colours of flexible, durable silicone bands. Constructed from high-quality silver Alcoa aluminium, these tags are anodized to a thickness of 7 microns, including the edges, providing a rust-proof finish that lasts. The tags are available in various sizes, fitting flush against your collar, lead, or harness, and are secured by the flexible silicone band that stretches over the product. We recommend the following sizes: - SMALL: Fits collars/leads & harness straps up to 20mm wide. - MEDIUM: Fits collars/leads & harness straps up to 40mm wide. - LARGE: Fits collars/leads & harness straps up to 50mm wide. Please select the appropriate tag size based on the width of your collar/lead/harness. Using the incorrect size—such as a smaller tag and band for a larger product—may require you to stretch the band and tag over the product, potentially damaging the silicone band. If you are unsure, please contact us for assistance. These tags are perfect for all of our collars, leads, and harnesses, except for our 3cm, 4cm, and 5cm slip-on collars, as these tags cannot attach to the collars since they do not open.