(WO2017143390) Claims 1 . A disposable sleeve having an antimicrobial property for covering an arm of a pair of spectacles, the disposable sleeve comprising: - a generally tubular body having an opening at at least one end thereof for receiving the spectacle arm; and - at least one antimicrobial agent containing component applied to a surface of the tubular body and/or dispersed therein, to impart the antimicrobial property thereto. 2. A sleeve according to claim 1 , wherein the at least one antimicrobial agent containing component comprises an antimicrobial agent selected from the group consisting of an oligodynamic metal ion, a quaternary ammonium compound, a biocide, an antibiotic and a photocatalyst. 3. A sleeve according to claim 2, wherein the oligodynamic metal ion is derived from a metal selected from the group consisting of silver, gold, platinum, palladium, iridium, copper, antimony, bismuth, zinc and alloys thereof. 4. A sleeve according to claim 1 , wherein the at least one antimicrobial agent containing component comprises a silver metal ion containing component. 5. A sleeve according to claim 4, wherein the silver metal ion containing component comprises a silver salt component selected from the group consisting of silver acetate, silver benzoate, silver carbonate, silver chloride, silver iodate, silver iodide, silver lactate, silver laurate, silver nitrate, silver oxide, silver palmitate and silver sulfadiazine. 6. A sleeve according to claim 1 , wherein the at least one antimicrobial agent containing component comprises a plurality of particles, each particle having oligodynamic metal ions applied to a surface thereof and/or dispersed therein. 7. A sleeve according to claim 6, wherein the particles comprise particles of glass, silica or titanium dioxide. 8. A sleeve according to claim 1 , wherein the at least one antimicrobial agent containing component comprises a plurality of zeolite particles, each zeolite particle having a plurality of ion-exchangeable sites for retaining oligodynamic metal ions via an ion-exchange reaction. 9. A sleeve according to claim 1 , wherein the at least one antimicrobial agent containing component comprises a plurality of particles of copper or silver. 10. A sleeve according to claim 9, wherein the or each copper or silver particle has dimensions on a nano-, pico- or angstrom-scale. 1 1 . A sleeve according to claim 1 , wherein the at least one antimicrobial agent containing component comprises colloidal silver. 12. A sleeve according to claim 2, wherein the biocide is selected from the group consisting of benzalkonium chloride, chlorhexidine and triclosan. 13. A sleeve according to claim 2, wherein the biocide comprises an antimicrobial peptide. 14. A sleeve according to claim 2, wherein the photocatalyst is selected from the group consisting of titanium dioxide and zinc oxide. 15. A sleeve according to claim 1 , wherein the at least one antimicrobial agent containing component is applied to the surface of the tubular body by chemical and/or physical modification of the surface. 16. A sleeve according to claim 15, wherein the surface of the tubular body is an external surface that has been thermally embossed to provide a micro- or nano- topography. 17. A sleeve according to claim 1 , wherein the tubular body is formed from a polymer selected from the group consisting of: silicones, neoprene, polyisoprenes, polybutadiene, polychloroprenes, polystyrenes, polyurethanes, polyolefins, polyvinyls, natural rubbers, synthetic rubbers, latex and mixtures thereof. 18. A sleeve according to claim 1 , wherein at least one portion of the tubular body is formed from a non-slip material to reduce movement of the sleeve along the spectacle arm in use. 19. A sleeve according to claim 1 , wherein an inner surface of the tubular body is lined with a non-slip material to reduce movement of the sleeve along the spectacle arm in use. 20. A sleeve according to claim 1 , wherein at least one portion of the tubular body is formed from a low frictional material to ease donning of the sleeve along the spectacle arm. 21 . A sleeve according to claim 1 , wherein an inner surface of the tubular body is lined with a low frictional material to ease donning of the sleeve along the spectacle arm. 22. A sleeve according to claim 1 , wherein the tubular body comprises at least one concertinaed portion configured to selectively extend or retract according to an overall length of the tubular body. 23. A sleeve according to claim 1 , wherein the spectacle arm comprises a hinge portion located generally adjacent to a lens or a lens frame portion of the pair of spectacles, the tubular body being configured to substantially receive and seal the hinge portion therewithin use. 24. A sleeve according to claim 1 , wherein the spectacle arm comprises a temple tip located distal to a lens or a lens frame portion of the pair of spectacles, the tubular body extending from the temple tip substantially to the lens or lens frame portion in use. 25. A sleeve according to claim 1 , wherein the tubular body is substantially closed at an opposing end thereof. 26. A sleeve according to claim 1 , wherein the tubular body is seamless. 27. A sleeve according to claim 1 , wherein the tubular body comprises at least one tab portion having no adhering qualities to facilitate manual application and/or ease of removal of the sleeve from the spectacle arm in use. 28. A sleeve according to claim 27, wherein the at least one tab portion is located adjacent the opening. 29. A sleeve according to claim 28, wherein the at least one tab portion is an extension of the tubular body at the opening thereof. 30. A sleeve according to claim 1 , wherein the tubular body comprises at least one tab portion located adjacent the opening, the at least one tab portion comprising a low tack adhesive strip for temporarily adhering the at least one tab portion to one of an external portion of the tubular body, the spectacle arm, a lens and a lens frame portion of the pair of spectacles for securing the sleeve to the spectacle arm in a sealing engagement in use. 31 . A sleeve according to claim 1 , wherein the tubular body comprises first and second tab portions each located adjacent the opening, and each having complementary securing portions that are configured to engage one another to secure the sleeve to the spectacle arm in a sealing engagement in use. 32. A sleeve according to claim 1 , wherein the tubular body comprises at least one tab portion located adjacent the opening to facilitate sealing of a hinge portion of the spectacle arm substantially within the tubular body when the sleeve is secured to the spectacle arm in a sealing engagement in use. 33. A sleeve according to claim 32, wherein the at least one tab portion comprises a low tack adhesive strip for temporarily adhering the at least one tab portion to one of an external portion of the tubular body, the spectacle arm, a lens and a lens frame portion of the pair of spectacles for securing the sleeve to the spectacle arm in use. 34. A sleeve according to claim 1 , wherein the tubular body comprises at least one portion that is formed from an elasticated material to conform snugly to a corresponding portion of the spectacle arm in use. 35. A sleeve according to claim 1 , wherein at least one portion of an external surface of the tubular body is configured to receive indicia thereon. 36. A kit for use with a pair of spectacles, the kit including: one or more disposable sleeves as claimed in any one of claims 1 to 35; and - a disposable nose bridge cover having an antimicrobial property for covering a nose bridge portion of the pair of spectacles, the disposable nose bridge cover comprising a sheet having at least one antimicrobial agent containing component applied to a surface thereof and/or dispersed therein, to impart the antimicrobial property thereto. 37. A kit according to claim 36, wherein the sheet is configured to wrap around the nose bridge portion and be secured in sealing engagement thereto in use. 38. A kit according to claim 36 or 37, wherein the sheet comprises at least one tab portion to facilitate manual removal of the nose bridge cover from the nose bridge portion by applying a pulling force thereto. 39. A kit according to claim 38, wherein the at least one tab portion comprises a low tack adhesive strip arranged for temporarily adhering the at least one tab portion to one of an external portion of the sheet when wrapped around the nose bridge portion, and the nose bridge portion itself, in order to secure the disposable nose bridge cover in a sealing engagement thereto in use.
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