It comprises two layers of stable fiber thread: a high thermal protection, low absorption outer layer (1), and a high absorption, fire-resistant inner layer (2). Both layers (1, 2) are arranged spaced apart by an air layer (3). The outer layer (1) may be made out of meta-aramid, para-aramid, polyamideimide, modacrylic and mixtures thereof; and the inner layer (2) may be made out of fire-resistant viscose, treated cotton or polybenzimidazole or mixtures with meta-aramid, para-aramid, polyamideimide and modacrylic. The fabric may be knitted fabric or double cloth fabric.