Material: Durable Plastic Quality Construction: Crafted from quality plastic, these bed risers are lightweight for easy handling yet strong enough to support heavy furniture securely. No complex installation is required—simply lift one side of the furniture and position the riser underneath. The base is designed with a removable rubber nonslip ring to keep your furniture stable and prevent unwanted movement on smooth floors. Package Contents: Includes 8 furniture risers, providing enough units for most household needs, with extras available for replacements or future use. For safety when relocating furniture, remove the risers before moving, and reattach them once the furniture is in its desired position. Height Adjustment and Stackability: Each riser increases furniture height by approximately 1.38 inches (3.5 cm). The bottom rubber ring can be removed when stacking risers to achieve desired height levels. Designed to fit furniture legs up to 1.97 inches (5 cm) in diameter. For safety, avoid stacking risers too . Multipurpose Compatibility: for elevating beds, sofas, chairs, desks, tables, and other furniture with leg dimensions up to 1.97 x 1.97 inches. Elevation provides added clearance for easy robotic vacuum cleaning and creates extra storage space beneath your furniture. Example Uses: Raise a bed to create storage space underneath for boxes or bins Elevate a sofa to make floor cleaning easier with vacuum or mop access Lift desk height for improved ergonomics and legroom Performance and Stability: Designed for everyday use, these risers keep furniture securely in place while offering flexibility in height adjustments. Their sturdy build and nonslip design ensure reliable support and reduced risk of movement on most flooring surfaces.