Generally, shoes bought in the market are not suitable for high-type insoles, and manufacturers need to make special shoe molds.

From the perspective of increasing the height of shoe brand promotion in the market, the mainstream height is 5 to 13 cm, and the best height is about 7 cm in terms of wearing comfort and invisible effect. The heightening layer is also known as the inner heightening insole. The two main heightening layers used in heightening shoe products on the market are the semi-cushioned heightening layer and the full-cushioned heightening layer.