| abstract |
Footwear for increasing leg and / or lower abdominal / back muscle tension includes a securing means for securing the footwear to the user's foot, at least an upper layer, or a further upper layer for engaging the user's foot in use, and A sole including a lower layer for engaging the ground in use, the upper layer comprising two or more materials of different compression resistance or density arranged as a front end / toe region, an arch region, and a heel region, the sole Is configured such that instability occurs in at least a portion of the upper layer due to the weight of the user during use, and balance correction by the user is required. [Selection] Figure 2 |