Positioning, stabilising, and interfacing structures and system incorporating same

A cleaning receptacle comprising:

• a housing defining an interior cavity configured to house the head-mounted display system comprising a head mounted display unit comprising a display, a positioning and stabilising structure configured to hold the head mounted display unit in an operable position on a user's head in use, the positioning and stabilizing structure comprising headgear including at least one strap configured to contact the user's head, in use;
• and wherein at least one of the head mounted display unit and the positioning and stabilising structure include a self-cleaning textile material, wherein the textile material includes a textile surface with a textile microstructure configured to limit adhesion of debris;
• a lid selectively enclosing the interior cavity;
• and
• an inactivation agent configured to inactivate biofilm from the textile material.