Having a bed that is practical and convenient is essential. And with storage at such a premium, under-bed storage should not be wasted. Using these handy bed risers can lift any bed to allow for convenient storage and access. Each riser is made of heavy-duty plastics and has a skid-free design, and can lift a bed up to five inches off the ground. They are designed for maximum stability and support during use and can hold up to 300 pounds each while working with most standard bed frame designs and setups.  # Pieces In Set: 4 Features: Adjustable Measurements: 6 Height/Inches, 6.3 Width/Inches, 6.3 Depth/Inches Maximum Weight Limit: 300 Lbs Each Base Material: 100% Polypropylene Material: Plastic Country of Origin: Imported