Zipper guitar strap

An adjustable length strap assembly adapted for use with a stringed musical instrument of a type held in front of a user of the instrument or performer while it is being played by the user or performer, particularly a guitar, the adjustable length strap assembly comprises:

• a first portion defined in part by a length of a strapping material having a terminal end configured to be secured to an anchoring point located on a rear portion of a body of the stringed musical instrument, said length of strapping material threaded through a substantially ring-shaped leveraging member via a first leveraging portion and folded, such that a section of the length of the strapping material is folded over to form a section having a two ply configuration of strapping material consisting of a first top ply and a second bottom ply, with slid-able longitudinal movement of each ply relative to one another leveraged by said first leveraging portion of the substantially ring-shaped leveraging member;
• and
• a second portion defined by a tongue capable of swivelling about a second leveraging portion of the substantially ring shaped leveraging member, the tongue configured to attach to an anchoring point located on a head portion of the body of the stringed musical instrument;
• characterized in that;
• the slid-able longitudinal movement of the second bottom ply of strapping material of the first portion of the strap assembly relative to the first top ply of strapping material of the first portion of the strap assembly is regulated by movement of a slider of a longitudinally oriented slide-fastening mechanism formed integrally to the first top ply;
• and
• wherein the slider is mechanically linked to a terminal portion of the second bottom ply by way of a flexible mechanical interlink such that longitudinal slid-able motion of the slider of the slide-fastening mechanism formed integrally to the first top ply allows a corresponding slid-able longitudinal movement of the second bottom ply and thereby provides for an adjustable length of strapping material of the strap assembly to be worn over a shoulder and around a neck and back of the performer.