Our biodegradable void fill is made of starch from renewable sources such as corn and potatoe. The loose fill is environmentally friendly, decomposes naturally without odor and can be disposed of in an eco friendly way because it is also water soluble. Alternatively you can choose our polystyrene void fill that is made from 100% recycled polystyrene. Both options give excellent cushioning protection as the void fill particles compress on impact absorbing the force before it reaches the product. The void filler is excellent as it takes up all extra air space within the box therefore stopping the product from moving around.