The objectives of this study were 1) to compare physical and wear performances of panty hoses made with silk 61amen1 and texturized nylon filament yams, 2) to examine these characteristics as a function of the percentage of texturized nylon filament yarn, 3) to evaluate thermal resistances and thermoyaphic assessments of those panty hoses worn on a thermal manikin, and 4) to investigate objective wear performances including microclimate and subjective wear sensations and relationships with their physical performances. Five digrent types of panty hoses made with silk filament yarn(S4), texturized nylon filament(N4), and blending level of the two types of yarn were(SIN3, S2N2, S3Nl) used as test specimens. Warmth retention values and Q-max values were measured using Thermo Labo II, and breaking strengths and elongations were evaluated by Instron Tensile Tester. Thermal manikin and subject wear tests were conducted in the following environmental conditions 21$pm$1$^{circ}C$, 60$pm$ 5% RH., and 0.25m/sec air velocity. Ten healthy female subjects followed the repeated exercises consisting of walking on a treadmill and resting. The results were as follows: 1) In warmth retention values and Q-max values, S4 showed higher values than N4. 2) The wickability and moisture regain of S4 showed higher performance than those of N4 but elongation and breaking strength of S4 was lower than that of N4. 3) As the blending level of silk filament yarn increases, warmth retention value, 0-max values, moisture regain, and wickability were increased but elongation and breaking strength were decreased. 4) Clo values measured using thermal manikin increased in the following order: S4>S2N2>N4. 5) Microclimate temperatures of the subjects who worn S4 were significantly higher than those of subjects who worn S2N2 and N4. But microclimate humidities were not significantly different among the subjects who worn S4, S2N2 and N4. 6) Thermal sensation rating of subjects who worn S2N2 was significantly higher than that of subjects who worn S4 and N4. Humidity, tactile and overall sensation ratings of subjects who worn S4 and S2N2 were lower than those of subjects who worn N4.