| 摘要 |
PROBLEM TO BE SOLVED: To provide a light slipper for stairs which has a sponge with low repulsion flexibility for the decreased cartilago at the slipper heel according to study of cause of foot shapes while going up and down with aligned feet on each step of stairs. SOLUTION: The light slipper for stairs is characterized by having a sponge which is thick and forms the heel on a heel of a slipper body and by having the sponge as a cushion for the cartilago in order to decrease the weight pressure in the knee joint while going up and down on the stairs. COPYRIGHT: (C)2011,JPO&INPIT
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