GIAN Anti-slip. Safety cast in concrete GIAN anti-slip formliners : attractive, thin texture mat adhered inside concrete mould GIAN is the name of the innovative texture mat from Compañero. This texture mat is easy to handle and can be used repeatedly. GIAN 2 S square with sandblast texture (12 x 12 mm) The rough surface provides a better grip when slippery, while the groove between the relatively small squares (12 x 12 mm) funnels water off quickly. The rough texture and water drainage effectively prevent aquaplaning. GIAN 2 S has an attractive design and a texture that is perfect for wet environments.