These 4-inch furniture risers are constructed from high-quality thickened polypropylene plastic with an internal mesh reinforcement, offering a heavy-duty solution capable of supporting up to 6,000 pounds when used as a set. The risers feature a triangular cone on the top and a rubber base, which work together to grip furniture legs firmly, absorb shock, prevent sliding, and protect floors from scratches and noise. An L-shaped lip on two sides of the top surface, along with a wide 4.52 by 4.52-inch contact area, accommodates various furniture leg shapes and sizes, making installation as simple as lifting the furniture corner and sliding the riser underneath. The widened trapezoidal base enhances stability, even on uneven surfaces, and the design is suitable for beds, sofas, desks, cabinets, TV stands, and other heavy furniture in home or office settings. By elevating furniture, these risers create additional under-bed or under-sofa storage space, allow robotic vacuums to clean underneath more easily, and can assist elderly or tall individuals by making it easier to rise from seated positions. Additionally, raising the head of a bed can help alleviate nighttime reflux, and elevating a workbench may reduce back strain during tasks. The combination of robust construction, thoughtful safety features, and versatile utility makes these risers a practical and reliable tool for improving furniture functionality and home organization. Color: Black.