Material and construction - Microfiber upper for the roller skate shoes, with a rubber sole and PU wheels. This combination provides a comfortable fit and reliable performance. Two in one design and conversion - 2 in 1 roller skate shoes with hidden wheels on the bottom. When you need ice skating, you can release the wheels. The trigger and pull back switch is located on the heel. - Releasing and switching to ice skating supports balanced learning and helps develop physical and mental skills through practice. Hidden button safety and operation - The design uses an invisible button to prevent accidental opening. At the back of the shoe is a button that opens the wheels. - To operate, press and hold the button, press the wheel toward the base plate, then release. This sequence activates or retracts the wheels as needed. Safety and performance features - Anti slip performance: The wheel has a good grip and improves slip resistance by imitating the sawtooth function of the roller, ensuring stability and safety during movement. Use scenarios - Beginner indoor practice: Ideal for beginners learning balance, with a quick switch to wheel mode for rolling and a controlled transition to stable stance. - Transitional practice between surfaces: Use the wheel mode for skating sessions at rinks or smooth pavements, then switch to ice mode as needed for skating on ice. - Travel and versatile activity: Convenient for days when activities switch between inline skating and ice skating, reducing the need for separate footwear and enabling practice in multiple environments.