Most important design consideration is the use of fabric material for a thong, as plastic or rubber are prone to break. Excellent padding. Very very comfortable. Has enough contours that follows the shape of the foot nicely. Love the unique and aggressive tread pattern design underneath, with the contour separation of the midsole to outer, finished off with a stretchline logo. Got this in late 2004, when stretchline was the thing alongside the FatCat, amongst other offerings at the time. When I look back on it, this was the last hurruh of peak Oakley design during the mad science era, just before blocline and square O were introduced in 2005.