Depends on which rider is getting them. They are from the GST factory in Austria if I remember correctly when I looked at the base of it there was structurn. It's kind of the same program Volcom has with their boards.
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oo, thanks for the info, cause an oppurtunity has come up for me to buy a 152, and it has a 24.8 waist width, structurn base, twin, but they don't have anything listed about the camber profile, which is prob the most important thing =(.