The Nike Dunk SB are the backbone of the Nike SB line. Nike saw the potential of tapping into the skateboard clothing market because skateboard clothing and sneakers were worn more as casual wear than for the actual sport. The Nike SB Dunks were the same shapes as the Original Nike Dunk but featured a few alterations. Due to physical strain on the foot, good cushioning was a necessity. Also, skateboarding shoes need to have a low center of gravity, so Nike decided to add Zoom Air insoles. Next, thicker padding was added to the areas around the ankle and the tongue. Last but not lease, there was no shortage of material used on the SB Dunks. Double and triple stitching is the norm in the skateboarding shoe industry, so Nike had to step up its design from the original Nike Dunks.