The relations between the formability closely related to “elegance of style” of clothings and the fundamental mechanical properties have been investigated in this paper. The results are ;
1) The extensional and compressional behaviore estimated by bending test of fabrics are closely related to fundamental dimensions (weight, thickneess, relative density) and softness of fabrics.
2) The softness and drape coefficient are more greatly related to the compressional behaviors than the extensional behaviors estimated by the bending test.
3) The crease resistance is deeply influenced by the tensile elasticity.
4) The formability can be expressed by the equations shown in Table 4. The drape coefficient and crease resistance are given as the function of the bending length and compressional behaviors respectively.
The extensional and compressional behaviors estimated by the bending test, especially discussed here as one of the most important factors, have much effect on many other useful properties of fabrics.

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The relationship between fundamental physical properties and performance of the lining fabrics was investigated for each purpose of uses. Tensile, bending, shearing, compressional, surface pro-perties along with thickness and weight were chosen as the fundamental physical properties and measured by KES-F fabric testing system.
The results are summarised as follows;
(1) Lining fabrics for women's dresses are in general small in weight and thickness, compared with women's dress fabrics. All the fundamental physical properties are distributed in the smaller range of their values. They are easy to slip and fit with garments.
(2) Lining fabrics for men's suit have comparatively large weight, and their bending and shear-ing properties are larger than those for women's dresses so that they serve as reinforcement of the form of garments.
(3) Comparing european garments with Japanese traditional dresses, they are different each other in construction and performances. The lining fabrics of Japanese traditional dresses serve as reinforcement of the form of garments.
(4) Silk linings fit best with the garments and cupra and viscose rayon linings follow them. Polyester linings have function to reinforce the form of garments.
(5) As to the fabric structure, physical properties of woven lining fabrics greatly differ from those of knitted ones. Knitted lining fabrics have rough surface and large value in shearing property. They are also great in extensibility but small in elasticity.

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