It seems to be a quite sturdy construction and that it can withstand the 300 Kg weight it claims. It also appears to endure sudden drops of loads (20-30 Kg). Although the purchase is recent, with a similar one I have had for 15 months now and with very frequent use, I have not had any durability issues. Before these, I used the corresponding metal platforms, which would quickly bend and become unusable from sudden loading with weights of 20-30 kilos (crates, cardboard boxes, etc.). Never again a metal platform since these came out on the market. Of course, I don't know about their durability after years due to changes in the properties of the plastic, but for my use, it is the only choice now.