Made of medical superior silica gel,safe,non-poisonous and no odour. 5-frequency 3-speed automatic circulation,adjust obverse and reverse rotating massage in the angle of 360 degree,36 massage modes in total. Inner massage softgel is quite soft elastic,emulational skin design has quite nice touch feeling in hand. Soft long massage thorns attached to the softgel,rotating soft thorns can comprehensively massage penis. The strong stimulation to penis and balanus can decrease the sensitiveness of balanus to reach the effect of exercising and postponing ejaculation.