This kit shows that a little bit of imagination goes a long way. It's a vibrating bullet with three fancifully designed sleeves. Just squeeze the bullet into the sleeve of your choice, and away you go. The simplest one is ridged and penis-shaped. The second has little bumps on the shaft and ticklish-looking sprouts on the head. But the coolest looking one of all is designed like the head of a unicorn, with its magical single horn supplying clitoral stimulation. Each sheath is made of 100 percent silicone, which Nasstoys calls, the safest material on the planet.