[Hot Item] PU Cork Birk En Stock Woman Sandal Insole Shoe Sole

Polyurethane soles (PU soles) have the dual requirements of durability and comfort, making PU soles an excellent material for producing top-notch safety shoes for leisure and workplace use.

Polyurethane shoe material is a synthetic polymer resin that is durable, waterproof and tough. In addition, PU shoe material is the most popular in the current  because it is lightweight, waterproof and wear-resistant compared to ordinary 100% leather. Footwear made with PU soles is quite comfortable to walk on every day.

In the early days, only athletic and hiking shoe manufacturers used polyurethane materials to produce shoes. Nowadays, fashion and business shoe manufacturers have started using synthetic shoe materials due to their durable and strong properties.


Benefits of PU sole material:
Comfortable, easy to wear and adjustable.
They are superior in performance and are waterproof, anti-slip and anti-oxidation.
Excellent shock absorber, chemical resistant and environmentally friendly.
The disadvantage is that due to the characteristics of environmentally friendly materials, if PU air-cushioned shoes are not worn for a long time or placed in a humid environment for a long time, the soles will absorb moisture in the air. Once the moisture in the pores cannot be discharged by walking, it will Hydrolysis occurs, causing the outsole of the shoe to break or the midsole to be damaged. So if it is discarded, it will slowly hydrolyze and then return to the natural cycle. Therefore, it must be used regularly. The characteristic of PU is that the more you use it, the more durable it becomes.