Abstract: The invention relates to a pants belt of the "English belt" type sewn into the upper part of a pair of extensible pants. This belt comprises an elastic band (3) of which the inner face is covered with upper (6) and lower (7) sheaths, composed of bands of bias fabric obtained by weaving non-extensible threads and cutting on a bias. The lower lining (7) comprises a floating part (7a) which may be connected to the pocket sacks by attaching points (12). The belt of the invention combines high aesthetic qualities, inside and outside, permitting mounting it on high quality pants, with remarkable qualities of elasticity, remanence and tension.