Wide - More traction and stability at high speed so you'll be less likely to slip out of your line.
Smooth - Smooth wheels come with a shiny coating on the riding surface that feels grippy at first, but wears away quickly.
Super Juice - Take the high quality urethane OJ's cruiser wheels have always had, add a more durable plastic core and an anti-flake shape and you'll have Super Juice. Stay hydrated.
78a - The most common durometer we see amongst cruiser wheels. They have great grip for cornering and easily roll over cracks, small rocks and the like.