User comfort
The supple and ventilated split leather upper guarantees comfort.
Cushioning
The EVA foam insole and flexible construction under the heel provide the cushioning you need while moving around the court.
Resistance to wear
The rubber sole makes the shoe very durable.
Sole durability: 1 star.
Upper durability: 1 star.
"Comfort level" star rating
The shoes have undergone a blind test by a panel of tennis players of all levels. They evaluate the level of comfort in terms of how the shoe fits and how soft it is (from the very first time worn), on a scale of 0 to 20.
"Cushioning" star rating
The shoes are tested in a lab on a machine that reproduces the impact of the heel when playing tennis using an 8 kg impactor. The greater the acceleration, the greater the impact suffered by the body.
"Resistance to wear" star rating
The shoes are tested in the lab on a machine that has been specially developed to reproduce the type of heel, forefoot, toe and instep wear seen during regular play. The more cycles needed to reproduce the wear on the shoe, the higher the shoe's durability (resistance to wear) rating.