Are there any sellers in Metro Manila that sell Kutzall Sanding/Carving Discs?

http://www.leevalley.com/us/wood/page.aspx?p=71098&cat=1,42500

I am new to woodworking and am planning to construct an ergonomic office chair and I need to carve the parts
specifically for the depressions and protrusions where the glutes and lumbar would rest on

If there aren't any, can anyone suggest alternatives to these? Thank you!