This set includes eight furniture risers in two sizes: four large and four small pieces. The risers are designed to elevate beds, desks, sofas, tables, and other heavy furniture to a more ergonomic height, helping to relieve backache, neck pain, and shoulder pain. The small risers can be stacked on the large ones to achieve three different height options: 2.95 inches, 5.12 inches, or 7.87 inches, making it easier to utilize under-bed storage space. Constructed from high-strength polypropylene plastic, these risers offer exceptional stability and durability with a bearing capacity of 500 kilograms or 1100 pounds per set. The material resists cracking even under heavy loads, ensuring safe and reliable support for your furniture. The black finish provides a clean, unobtrusive appearance that blends well with most home decor. This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm under Proposition 65. Each large riser measures 7.28 by 7.28 by 5.91 inches, while each small riser measures 5.12 by 5.12 by 3.74 inches, providing versatile height adjustment options for various furniture types and room configurations.