`Get your hands on the all-new 2.5 lb. (1.14 kilos) Zumba® Toning Sticks and pump up your Zumba Toning party! Heavier. sturdier and more rugged. these sticks are designed for the students in your class that want to move to the next level. Filled with sand to allow more “give” than traditional hand weights. these maraca-like sticks are also musically charged dumbbells that let your class shake and rattle to the rhythms while you guide them to a more defined.more sculpted body!