This set of heavy-duty furniture risers is constructed from solid polypropylene with a secure stackable design, allowing a single layer to provide a 1.5-inch lift and two stacked layers to achieve a 2.9-inch height increase for desks, chairs, sofas, tables, cabinets, or beds. Each riser features an L-shape with both a full side and a half side, accommodating furniture legs up to 4.5 by 2.4 inches; the full side suits smaller legs, while the half side accommodates larger or wider legs that do not fit the full side. The top surface is rough and convex to prevent furniture legs from slipping, and the base includes TPU non-slip rubber that adheres firmly to floors, protecting hardwood, tile, or other hard surfaces from scratches or dents. The risers can support a total weight of 1301 pounds when used as a set, making them suitable for heavy furniture in home or office settings. By elevating furniture, they create additional under-bed or under-sofa storage space, facilitate easier cleaning with robotic or standard vacuums, and can assist individuals with mobility issues or back pain by making it easier to rise from seated positions. Users should verify their furniture leg dimensions before purchasing to ensure compatibility. The combination of stackable height options, non-slip features, and substantial weight capacity makes these risers a practical solution for improving furniture functionality, accessibility, and organization. Color: Black. Material: Plastic.