These bed risers not only make it easy for robot vacuums to get under furniture without getting stuck, but they also raise the furniture for extra storage space underneath. The sofa risers also make it easier for the elderly, tall, or disabled to get up from the sofa and raise a workbench to say goodbye to back pain, and they can even raise the head of the bed to relieve reflux problems at night. Our table risers are made of thickened plastic, which is strong enough to support any heavy furniture for the home or office. The design of the internal reinforcement ribs significantly increases the load-bearing capacity. They can safely support up to 900 kg in total (when bed risers are used together). The heavy-duty bed risers can bear the weight of XL-sized student beds, full-sized beds, queen-sized beds, etc. The four-sided barrier protection on the top can fit various furniture legs. The desk riser's recessed cups are 7 cm wide and 1 cm deep, allowing them to fit securely on bed legs as well as comfortably on a sofa, desk, or table. Our table risers are made of thickened plastic, which is strong enough to support any heavy furniture for the home or office. The internal mesh reinforcement design significantly increases the load-bearing capacity. The bulging triangle on the top and the rubberized bottom of the table risers provide a firm grip on the furniture legs, are shock-absorbing and non-slip to prevent the furniture from sliding, protect the floor from friction, and reduce noise. Color: Black Material: Plastic Package contents: 8 x Furniture Height Increasing Pad Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the product in the picture to differ slightly from the real item. The allowed measurement error is +/- 1-3 cm.