【Durable Materials】The bed riser is made of high quality ABS plastic and non-slip rubber, which is stable and has good weight-bearing capacity. Each set of bed risers can withstand heavy furniture weighing up to 6,000lbs, stable and no need to worry about the furniture wobbling. Provide a more comfortable sleeping environment. 【Flexible and Adjustable】This package comes with 4 × Upper Bed Risers, 4 × Bottom Bed Risers. Stacking the upper and lower layers for a higher support that increase the height by 7.6cm (3 inches). Flexible to use, available stacking combination use or separate use, you can use them according to your needs. 【Concave Cup Design and Anti-Slip】The bed legs are securely installed in the square concave cups of the bed posts, with a depth of 0.72 in (1.8 cm) that can effectively prevent furniture from sliding sideways. And the 3-inch bed risers bottom has TPU non-slip rubber design, protecting the floors from scratches, and reduces vibration and noise. 【Comfortable Life】The bed risers not only provide you with more storage space under the bed, but also help to improve sleep or relieve back pain. Helpful to change the height of large furniture easily, and also facilitate to allow people with mobility problems to get up from the bed or sofa easily. 【Perfect for Thin Legged Furniture】This bed risers feature a square design, and 2inch+1inch stack together increase height of 3 inches. Suitable for furniture/appliances with round bottom legs in diameter less than 2.75 inches (6.98 cm); Square bottom legs in length of less than 2.75×2.75 in (6.98×6.98 cm). Such as beds, sofas, washing machines, coffee tables, tables, cabinets, chairs and refrigerators.