about 99 995 pure according to one embodiment of the invention the substantially biocidal material is disposed in a substantially uniform thickness about a profile of the substantially flexible longitudinal portion 104 according to one embodiment of the invention a metallic biocidal material is combined with a further biocidal material such as for example one or more of an antibiotic material an antiseptic material an antiviral material and a fungicidal material the practitioner of ordinary skill in the art will understand that a wide variety of such biocidal materials can be applied in various embodiments and for example captured in grooves of fibers as illustrated in fig2 for example and without intending to provide a comprehensive such biocidal materials include acyclovir zovirax u00ae amantadine symmetrel u00ae aminoglycosides amoxicillin generic amoxicillin clavulanate augmentin u00ae amphotericin b nonlipid fungizone u00ae ampicillin generic ampicillin sulbactam unasyn u00ae atovaquone mepron u00ae azithromycin zithromax u00ae cefazolin generic cefepime maxipime u00ae cefotaxime claforan u00ae cefotetan cefotan u00ae cefpodoxime vantin u00ae ceftazidime generic ceftizoxime cefizox u00ae ceftriaxone rocephin u00ae cefuroxime zinacef u00ae cephalexin generic chloramphenicol generic clotrimazole mycelex u00ae ciprofloxacin cipro u00ae clarithromycin biaxin u00ae clindamycin cleocin u00ae dapsone dicloxacillin generic doxycycline generic erythromycin lactobionate generic fluconazole diflucan u00ae foscamet foscavir u00ae ganciclovir cytovene u00ae dhpg gatifloxacin tequin u00ae imipenem cilastatin primaxin u00ae isoniazid generic itraconazole sporanox u00ae ketoconazole generic metronidazole nafcillin nitrofurantoin nystatin generic penicillin g generic pentamidine generic piperacillin tazobactam zosyn u00ae.