The Havana Shakers uses 2 aluminum cigar tubes (yes, real cigar tubes from a German company that ships to Cuba) with a sophisticated filling to create soft (SK12) or sharp (SK17) shaker sounds. The compact size and ?comfortable-to-grip? diameter of the tubes makes the Havana Shakers fit perfectly in the hand for nuanced, fatigue-free playing. The tubes are connected with an elastic band, which can also be used to combine larger shaker packs for all kinds of sound gradations. For really big packs, the latex bands are available separately. The flexibility with this system gives the user an infinite variety of sounds to combine and play with.