This invention discloses a mat for multispectral camouflage of objects and permanent constructions. The mat comprises a layer which is heat insulating and preferably also heat reflecting, especially a perforated layer. Materials such as carbon and metal are embedded into or coated upon the layer, said materials affecting the reflection and emission characteristics of the mat in the thermal infrared range and in the radar range. In order to obtain an overall protection against unwanted detection, also of plane and smooth surfaces, by means of a hard wearing camouflage mat said heat insulating and heat reflecting layer has on its side facing away from the object or permanent construction a diffusely reflecting layer, preferably a layer which is permeable to liquids.