At first, ottoman bed frames do require a higher level of strength to lift the base, however, over time this will lessen as the struts become used to the weight of the mattress and become more lubricated. Please bear in mind that all high quality mattresses such as the mattresses we offer at Winston's, do weigh a significant amount due to the high number of natural fillings in the mattress, especially super king and king sizes. Therefore, if the strength needed to open your ottoman is a concern for yourself, then we would suggest that you opt for a 2 or 4 draw divan base.