TENGA's latest malleable material has allowed them to create a brand new concept and sensation called the TENGA FLEX. This is the Silky White version of FLEX. The FLEX's spiral-ribbed outer case creates a "spinning stimulation". Simply cover the air hole at the top of the item after insertion, and the FLEX will wind and unwind, creating a spiraling movement as you stroke. Additionally, the FLEX's malleable casing allows you to squeeze, twist and grip the item to directly change the stimulation to