Tenga Flex Rocky Black Stroker Red Dot Design Award Winner for 2018. Time to unwind. Flexible spiraling sensations. Time to unwind. Flexible spiraling sensations. Tenga Flex lose yourself with the spiraling sensation. The Tenga Eggs include some of our most popular disposable masturbators! These small eggs contain a super stretchable elastomer sleeve that suits most sizes. Each design reflects the internal details so you enjoy different sensations from each!