I'm a ref, and 190 lbs, I was still sliding all over the concrete in the cheap hard wheels that came with my R3s. I needed grip, and Radar Shadow gave me that in spades. I tried a teammate's poisons before getting these. I think they're nearly identical, and I'll say these Shadows have never slid on me. One thing: these wheels will never be confused with light wheels, but I don't need light as a ref.

I love my shadows, dont get me wrong, If you take care of them, they will take care of you. The are my go to wheel when i dont know what I'll be skating on and how slick it will be. Painted or polished concrete, these wheels shine! I also use when I skate outside. I love them.... BUT If you have the choice, go with Atom poisons, they are just slightly better in all areas, and pretty much the same price. -Loki Doki

We skate on cleaned, waxed concrete and the hard wheels I was skating on were not good. I was having problems staying put on the corners, but these hybrid wheels are super sticky/grippy on almost every surface. I LOVE these wheels. The only drawbacks are they're too sticky for quixk T-stops and they seem to "gunk" up quick and require lots of cleaning. But plow stops are made easy with these.