These have the perfect mix of slip and grip. They provide a nice smooth ride outdoors & indoors. Imo, if they're broken in a few times outdoors first they seem to be a bit more slick on wood floors which is always super fun. I have full sets each of green & black pearl. The green imo is rly underrated. It has more of an aqua green light effect than I was expecting, but so bright & unique, so I really enjoy it. I have 2 sets of black pearl, 85a & 101a. These wheels' actual colors are just gorgeous on their own, and the lights are the cherry on top. If I had to pick one wheel to skate on forevermore, it would be these. Indoors, outdoors, light-up capability, agile, smooth ride...what's not to love?!