ADJUSTABLE FURNITURE LISTERS - The customizable riser system instantly creates additional storage space under the bed; ideal for bed, sofa, table and chair at home and office. SIZE AND DESIGN - Super solid bed and riser furniture can be modified with three height options - up to 7cm, 13cm and 20cm (if combined) and has the largest distance between the bed columns; bed risers can be stacked together when not in use to save space. UTILITY - The bed leg fits securely into the recess cup and can be conveniently used on any bed; it has a depth of 2 cm to keep the bed column in a secure position. DURABLE AND SOLID - Made of durable plastic, able to withstand the weight of the heaviest furniture in your home or office, they can safely hold a total of 1,300 lbs. (when the risers of the beds are used together), but be sure to use them only if a suitable size is delivered. MAKE THE RIGHT CHOICE - The adjustable risers are not suitable for reclining furniture; moreover, make sure the furniture legs are no thicker than 7cm to ensure the right size that gives a stable base to the furniture with minimal chance of collapsing.