Filler made of whole leaves that run the full length of the cigar, folded rather than chopped. Long filler is the standard for premium handmade cigars and is what the term hecho a mano implies in practice.
Why it matters
Full-length leaves give a smoother draw and a more consistent flavor from light to nub than chopped tobacco.
In context
"Everything in this line is long filler, Nicaraguan puro, no scraps."