Silicone Case for iStick 20W / 30W Battery, a practical battery body protection case. It fits well with both iStick 20W and 30W istick battery. ELeaf now design a new kind of silicone case, in order to protect iStick from normal wear and tear. It is more comfortable and more economical. All the corresponding button positions are marked correctly so one can adjust iStick easily without taking it out of the case. There are four colors for your choice: black, white, hot pink and blue.