How would you like it explained? Would you like to know how the material feels, or maybe how intense the texture is?
The material I am sure depends on the person. what I am confused about is why the spiral design? I have seen others with nubs etc which make sense to me. Is this a similar effect?
I don't understand the spiral design on this vibrator. I am new to the whole toys thing.
Depending on how you intend to use the toy, internally or externally- I would say that it feels different. Internally you can twist the toy and feel the differing pressures that the spiral gives. If I misunderstood your question or if you have other questions, please let me know. =)