The Tenga 3D is a male masturbator sleeve and it is the first of its kind to be given the Red Dot Design Award. It is designed beautifully so much so that it is displayed inside out. To use, just flip the sleeve and the design pattern that you see is what will give you the wonderful sensations. The 3D Spiral will spoil you with its winding hexagonal plates. The varying sensations of the spiral form and the detailed rib of each step combine to give you two separate sensations. It will give you both hard and soft stimulations at the same time for an overwhelmingly pleasurable experience.