These are tiles (lights?) that change color when touched with your hands or feet. They are designed to be jumped on. They are rechargeable, easy to install, and don't require batteries. We used to play with them by touching them with our hands. They haven't been played with much and have been stored in a box. Colorful touch-sensor sports toy, 30cm in diameter, with a weight capacity of up to 70kg. - Colors: Blue, Pink, Green, Red, Purple, Yellow, White - Size: 30cm diameter, 7cm height - Weight Capacity: 70kg - Function: Changes color with touch sensor - Retail Price: 3,620 yen Thank you for looking.