Replacement Air Cushion ZOOM DUNK SB Shoes Insoles GK-220
[GK-220]

4 of 5 Stars The zoom air unit in the heel is not as pressurized as it should be. The black version of the SB replacement is much better. I don't think I'll be using these in my shoes. The design is cool, but the quality of the materials is not as good as the other version.