Japanese young women are very interested in yukata, but they worry much about the “fabric looseness or slippage” accompanied by movement. In the present study, Ohashori+ slippage was examined to clarify the actual situation and the causes. Subjects were 9 females in their twenties. After 10 repetitions of series of movements involving bowing at standing/sitting plus standing and sitting without bowing, the magnitude of Ohashori slippage varied significantly according to the kind of movement. When bowing while standing, the more slippage occurred in subjects who had longer legs ; when bowing while seiza++ sitting, those who had greater girth and thicker hips, or whose difference between waist and lower waist girth was larger or whose difference between lower waist and hip girth was smaller, were commonly experienced more slippage. For the positions tightened Koshi-himo+++, slippages and clothing pressure were significantly less when tightened over the higher iliac crest superior border than at the waist. In addition, the magnitude of Ohashori slippage might be due to 3 other factors : height change of Koshi-himo, the gap between the yukata and the Koshi-himo. and floating lapels inside the Ohashri.
+ : a lapel folded an extra length around the waist, when a woman wears a kimono.
++ : sitting on one's lower legs.
+++ : a cord tied around the waist.
