These are super awesome they last a long time .Really bouncy you wont feel a thing outdoors going over rocks.

I love love loooove these wheels! I bought a set 2 years ago, and they're still great! I use them outdoors and indoors (on cement) when I don't want to wear out my softer grippier wheels. Great derby practice wheels! :)

I got these in size 70 and i simply love them! The ride is smooth and fast and they add more stablity. Cool wheels worth every dime.

Don't get 62's 65's get the 70's they are super smooth. The smaller sizes you will feel lots of vibration but go with the big ones and you will float on asphalt, concrete, and sport court. Get these, there is no other way to go!!!!!