Three lightweight, dual-chamber modules are watertight and screw onto each other to provide you with six independent flavor options. Countdown: Three, two, oneWaterproof caps and shaker modules screw together to keep spices dry and flavorful.Twin compartment shakers include single sided dispensing screens which twist into position and remove easily for cleaningConvenient filler cap stores below the base and makes it easy to refill any of the compartmentsClever modular design is infinitely expandable to carry any number of spicesClear copolyester resin body is lightweight, clear and resilient