yarn comprising continuous filaments bundled staple fibers or spun staple fibers or both filaments and staple fibers the u201c first sheath yarn u201d is the sheath yarn wound around the core yarn to form a single covered yarn suitable first sheath yarns for use in the present invention are bright flat yarns especially fully drawn yarn fdy bright partially oriented poy polyamide yarns or bright textured yarns first sheath yarns may have a round an oval or a trilobal cross section examples of suitable first sheath bright yarns for use in the present invention are nylon 6 6 flat 22 7 br trilobal nilit u00ae fibers nylon 6 6 flat 17 4 br oval nilit u00ae fibers nylon 6 6 flat 17 3 br trilobal nilit u00ae fibers and nylon 6 6 flat 44 34 br trilobal nilit u00ae fibers nylon 6 6 poy 27 7 br trilobal nilit u00ae fibers nylon 6 6 poy 17 3 br trilobal nilit u00ae fibers nylon 6 6 poy 22 7 br trilobal nilit u00ae fibers and nylon 6 6 poy 27 12 br trilobal nilit u00ae fibers the u201c second sheath yarn u201d is the sheath yarn wound around the single covered yarn to form a double covered yarn examples of suitable second sheath yarns for use in the present invention are made of natural or dyed polyamide e g spin dyed polyamide and can be either textured flat or poy yarns an example of a suitable second sheath yarn for use in the present invention is the nylon 6 6 textured 44 34 1 bk spin dyed black yarn from nilit u00ae fibers the terms u201c bright u201d u201c brilliant u201d u201c shiny u201d and u201c glossy u201d are used herein interchangeably and refer to the glossy effect of.