Since their invention heel shoe never changed. The problem is inside the rigid structure that never changed and women are now used to suffering from pain or to bring a spare pair of shoes. These years of digitization and the evolution of women within the community have led to a radical change in needs. In fact, today's women prefer more comfort in everyday life than 10 years ago, the rules have changed and with them, our shoes must also evolve. Trilly was born for this needs, the first shoe with an extendable heel. Trilly is the first technology applied to a women's heel shoe, which allows, through the raising and lowering of the heel, to be able to change the height and, consequently, the structure of our shoes. The operation is extremely simple and intelligent: the user can choose whether to raise or lower the heel on 3 different heights (5cm, 6cm or 7cm) safely and with a simple click. The button is located on the inside of the heel and is away from the ground, this allows a more hygienic and clean use.