A recent product to the market, Rosin Saver consists of a screw-top container, silicone cup for your rosin, and two humidification packets. Assists in preserving a cake of rosin and preventing it from becoming dry and powdered via evaporation of its volatile oils in just a few short months. If your new rosin (such as Pops') comes in a paper wrapper, you can peel the paper off and store the cake in flexible silicone. Each humidification packet lasts for several months - comes with a spare so you can keep the system humidified. Additional humidification packets are available separately.