Stride - 16"/20"×2.125"This tread delivers superior traction, grip and durability for tough terrain. The center tread keeps things fast and quiet on pavement, while the grippy, staggered blocks bite into loose gravel, wet roads, tough terrain, and everything in between. This layout keeps great grip while letting you corner more smoothly and responsively. It also grips mud and sand firmly without easily getting stuck. This tire is compatible with kids' bikes, BMX bikes, and