The Moxi Cosmo Glow LED Wheels are outdoor roller skate wheels that glow while they roll! They come in three different color combinations: White Rain is an opaque white tire with multi-colored lights inside, Purple Haze has blue lights inside a lavender tire and lastly, Galaxy Green has blue lights inside of a seafoam green wheel. The LED lights are powered by a magnetic spacer that rests in between the bearings and illuminates your wheels as you roll. Cosmo Glow Wheels are 80A in hardness and they have a nice profile for outdoor skating with a curved outer edge and a flat side that will not interfere with any of your hardware.