Nike's free series has been selling well since it was launched. The free series is divided into 3.0 5.0 7.0 series. Middle-aged people are suitable to wear 5.0 and 3.0 series, because the sole PYLONE material is very soft. Please refer to the following list for details.

Free3.0 features: the softest and most suitable for people to wear: poor support, not suitable for the elderly, suitable for exercise intensity: not suitable for sports, feet will feel sore after wearing for a long time.

Free5.0 features: both comfort and protection are suitable for people: all kinds of people are suitable for exercise intensity: suitable for daily leisure activities, and can also be worn during a small amount of exercise.

Free daily features: ZOOM air cushion is more comfortable for people: suitable for all kinds of people, suitable for exercise intensity: comfortable, cushioned and suitable for continuous exercise.

FREE7.0 features: suitable for people who exercise regularly but pursue comfort. Suitable for the crowd: suitable for gym activities.

Free Sparq features: suitable for people who exercise regularly but pursue comfort. Suitable for the crowd: suitable for gym activities.