Smooth - Smooth wheels come with a shiny coating on the riding surface that feels grippy at first, but wears away quickly.
Wheel Profile
Wide - More traction and stability at high speed so you'll be less likely to slip out of your line.
Wheel Shape
Chubbies - Chubbies shape features a super wide riding surface for the best slides, with big round radial edges that make getting on and off curbs and ledges effortless.
Durometer
99a - Offers more grip than harder wheels and more slide than softer wheels. Great for slick surfaces when you want more control.