Tenga 3D Spiral is an exciting and discreet masturbator for men from the Japanese sex toy brand Tenga. As the producer of some of the world’s most popular products for men, Tenga has once again managed to create a well-thought-out and extremely discreet masturbation product.  It is made from a soft TPE-rubber, that gives a realistic feeling against the skin.  Tenga 3D Spiral has an artistic spiral design that gives intense stimulation. When you use your Tenga 3D, start by turning it inside out so you can appreciate the stimulating design within the masturbator itself. Apply some water-based lubricant in your Tenga 3D before starting, for a more realistic feeling.