What role does lining the denim slingback with synthetic leather play?
After seeing the product information stating different materials for the outer fabric and lining, this question arises regarding the reason for using synthetic leather on the inside that directly touches the foot, as well as its function when worn.
The synthetic leather lining prevents the rough denim from directly rubbing against the foot and helps stably maintain the shoe's shape.
The outside is fabric, and the inside is leather.
The materials disclosed in official sources for THREE TO EIGHTY's FRINGE DENIM SLINGBACK BLUE are two types: upper and lining[1]. DENIM is used for the UPPER (shoe exterior), and SYNTHETIC LEATHER is used for the LINING where the foot makes contact[2].
The properties of the two materials are different. The denim of the upper is a cotton fabric woven with yarn that shows a unique texture, but it can feel stiff and rub roughly if it directly touches the skin. In contrast, the synthetic leather used for the lining has a smooth surface, reducing friction against the foot's skin when walking. In addition, it also serves to firmly support the shoe's shape from the inside, which can easily lose its form with thin cloth alone.

The detailed composition of the synthetic leather and the exact blend ratio of the denim have not yet been confirmed.
Product measurements
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FRINGE DENIM SLINGBACK BLUE
Other stated figures
| Part | Value |
|---|---|
| 굽높이 ◦ | 6cm |
For rows marked with ◦, flat measurement or circumference could not be confirmed in official sources, so hmmm determined them using figures from the same item.
