An attempt has been made to establish some general relationships between crease recovery and variables of fabric construction by an investigation of 174 systematically varied Fortisan filament fabrics. Crease recovery is generally improved by open construction, i.e., for any one fabric weight, by employment of high yarn denier and wide yarn spacing, and of open weave, i.e., one with long floats. In the case of asymmetrical weaves (e.g., 2/1 or 5/1 twills) the crease recovery is higher when measured with the longer float outside the crease. In general, little effect on crease recovery was found if the yarn properties were varied only in the filling direction.