User comfort
The upper is made of soft PU for added comfort.
Cushioning
The flexible construction under the heel provides better cushioning while moving on the court.
Resistance to wear
Rubber outsole provides good resistance to wear.
Sole durability: 1 star.
Upper durability: 1 star.
The "user comfort" star test
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.
The "cushioning" star test
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" rating test
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 resistance rating.