Part of the Viaje Summer release schedule, the C4 follows the explosive motif. This heavily box-pressed robusto-ish sized smoke, capped on both ends, imitates the shape and packaging of a plastic explosive. The blend has remained the same throughout the years, but the construction has undertaken some minor tweaks. In order to release some of the moisture from the double capped cigar, a small hole has been purposely placed in the "foot". I guess when your in experimental territory like this, sometimes minor modifications need to be made for the good of the cigar. Full bodied and enjoyable, if you're a fan of the Skull & Bones series I would try these rich, full flavored smokes.