SoleMate Singapore uses high quality Virgin Polypropylene as the main material for its shoe boxes. Polypropylene (PP) is made by combining propylene monomers (a tasteless, colorless, odorless synthetic material). It has numerous different applications such as consumer packaging material, plastic hinges, waterproofing insulation, and more. It is considered a low-toxin, heat-tolerant material. 
It is the safest of all plastic material for humans and often used as food storages. With this material, it gives our shoe boxes the sturdy and firm look for stack-ability due to high flexural strength from its semi-crystalline nature.

Adding the ABS (Acrylonitrile Butadiene Styrene) for a few of our products, it provides favorable mechanical properties such as impact resistance, toughness, and rigidity when compared with other common polymers. A variety of modifications can be made to improve impact resistance, toughness, and heat resistance. The impact resistance can be amplified by increasing the proportions of polybutadiene in relation to styrene and also acrylonitrile, although this causes changes in other properties. Impact resistance does not fall off rapidly at lower temperatures. Stability under load is excellent with limited loads.