D-rings are welded for strength and durability.adjustable for a perfect fit.Each bowtie is hand sewn and attached to collar using elastic strap.Fabric: each collar is made with cotton designer fabric. hardware: all hardware is heavy duty . Unlike most bowties made for dogs, these are traditional double bowties. The bowtie can be attached to any collar without any alterations to the collar itself. Bowties are not machine washable, but can be removed from collar and rinsed with water and mild soap.feature: adjustablecleaning: machine washableCollar Type: Basic Collars, Head CollarsQuantity : 1 pcsNote:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement.D-rings are welded for strength and durability.