Collars may be used in role-playing games involving erotic humiliation because they have connotations of control and pet-like status, especially when worn with a leash.The most common material for a collar is leather, and many people use actual dog collars with a buckle.Other materials include rubber, PVC, and metal (typically stainless steel; however, a few sources offer precious metal versions).
In a BDSM context, a collar is a device of any material worn by a person around the neck to indicate their submissive or slave status in a BDSM relationship.
A person wearing a collar to symbolize their relationship with another is said to be collared.
Some people conduct formal "collaring ceremonies," which are regarded as effectively solemnizing their relationship in a similar way as a marriage ceremony and the collar having similar significance as a wedding ring.
The standard form of a collar is a black leather band around the neck, often with metal D-rings added to allow the attachment of a leash, rope or other restraints; but to be more discreet in public, some people may wear an ordinary choker or jewelry necklace for the same symbolic purpose.
Some wolf collars have the spikes coated in plastic for added protection.
A neck corset is a type of posture collar that incorporates stays.It is a corset-like device designed for the neck instead of the waist, but usually it is not used to compress the neck in the way that a normal corset compresses the waist, except in breathplay.Collars often feature buckles, straps and hooks, padlocks and other attachments.A wolf collar is a collar fitted with long spikes, which are considered decorative.Such collars were originally used to protect dogs from wolves, but wolf collars have now been adopted by the BDSM community.However, the spikes are considered to be dangerous, and therefore such collars are used with care.