Converse shoes with felt soles are taxed less

Why do my Converse All-Star shoes have a small layer of felt on the bottom? Shoes with felt on the bottom can be taxed at 3% versus 35%!

Steck writes on Gazetc that the difference between importing a fuzzy shoe—like a house slipper—and a rubber one—like a sneaker—can be huge.

According to the inventors, “a classification may be based on the type of material that is present on 50% or more of the bottom surface.”