The Radar Pop is a durable urethane wheel for indoor roller skating and roller derby. 59mm diameter by 38mm width. Sold in a 4 pack.
Softer wheels (88, 91) will give better traction while harder wheels (93, 95) give better roll.
Good for: indoor roller skating, roller derby, beginner skaters
Not good for: outdoor skating
Don't forget to pick up a set of bearings for your wheels!