KALEIDO ShinyNight USB Charging 11 Colors Led Light up Shoes Fashion Sneakers Sport Shoes for Mens Womens Girls Boys PU leather, Rubber sole. Lining Material: Cotton Fabric Size Instruction:Since sizes can vary between brands. Please refer to the following size chart , measure your heel-to-toe length and then choose the size fit your best. Please pay attention to the distinction between men and women size. Switch Instruction: Hidden switch button beside the charging port. Press it to switch on. With each press,it changes to another light mode. Press the switch for 12 times to turn the light off , or keep pressing for 3 seconds to turn off the power. Light Modes: light on from 1.red(steady) -2.green(steady) -3.blue(steady) -4.yellow(steady) -5.skyblue(steady) -6.purple(steady) -7.white(steady) -8.white(twinkle) -9.slow auto-change mode -10.fast auto-change mode -11.twinkle+auto-change mode -12.light off Charge Instruction: Easy charge like your cell phone with the attached USB charging cable. Switch on the shoes when received and light up until all power gone. Then charge both shoes for 3 hours. KALEIDO shoes have a strict quality contral to ensure the high quality of shoes. Please buy the shoes only from" KALEIDO INC",say no to pirated products. We will be responsible for quality issue.