The TENGA 3D Spiral masturbator is a one-of-a-kind sleeve that’s designed for intense stimulation. The ergonomic design and the tight fit that really intensifies his pleasure whether he’s playing solo or including a partner. This Spiral masturbation sleeve is modelled on a hexagon and this gives it plenty of stimulating twists, deep ridges and spiralling waves that work their magic.

https://www.youtube.com/watch?v=qvLGg7m04Gg&feature=youtu.be