Sandwich Island Composites (SIC) Paddleboards provide excellent performance and durability because of their unique construction. Both ACE-TEC and TOUGH-TEC boards utilize thermo-formed skins, watertight EPS cores, and externally molded inserts. The lighter weight ACE-TEC is constructed with a durable polymer outer skin, thermo-formed over a fiberglass-wrapped, stringerless EPS core for a lively and responsive performance.