7-ply 100% North American Maple with Super Sap Resin Glue. Super Sap is the strongest eco-friendly resin formulated with recycled bio-based renewable raw materials. Super Sap construction reduces energy use, emssions, and environmental impact. Packaged in a 100% compostable bag. Measures 8.5" x 32.1" with a 14.25" wheelbase and Mellow concave.