Shoes for ball sports

A shoe comprising:

• an upper comprising an outer surface;
• a sensor for sensing movement of the shoe,
• a first actuator configured to control pressurized air in the upper and comprising:
• a pneumatic valve;
• an air pump configured to provide pressurized air to the pneumatic valve;
• an inflatable element arranged under a portion of the outer surface of the upper;
• a processing unit configured to control the pneumatic valve of the first actuator to provide pressurized air to the inflatable element to inflate the inflatable element to change at least one surface property of the portion of the outer surface by moving the portion of the outer surface in an active direction away from an initial state of the portion of the outer surface based on sensor data from the sensor;
• and
• a second actuator configured to supply heat in the upper and comprising:
• a shape memory alloy arranged to direct a force relative to the portion of the outer surface of the upper, wherein the shape memory alloy comprises a wire configured to be heated via a current flowing through the wire, wherein the wire contracts from an original length or shape upon reaching a threshold temperature from the current flowing through the wire, and wherein the wire relaxes to return to the original length or shape upon cooling down below the temperature threshold;
• and
• wherein the processing unit is further configured to control the shape memory alloy of the second actuator to change the at least one surface property of the portion of the outer surface by moving the portion of the outer surface in a passive direction opposite the active direction and toward the initial state of the portion of the outer surface based on sensor data from the sensor.