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 9 octagon with sandblast texture (12 x 12 mm) This texture is a whimsical variation on the GIAN 2 S. The octagons, which look like circles from a distance, give a unique look to the area in which they are used. Most importantly, the anti-slip properties of this texture are excellent.