STACKABLE DESIGN: Bed and furniture risers are designed to be assembled. MATERIA UPGRADE:Furniture risers made by durable PP,Every risers can handle heavy duty furniture up to 1000 lbs.easily hold your heavy duty furniture and wouldnt wobble. WIDELY APPLICABLE:bed risers heavy duty apply to raise beds,couches,chairs,cabinets,tables and fridge,gave you more storage space."L" side makes Furniture Risers easier to match to the furniture legs. ANTI-SLIP AND SHOCK ABSORPTION:Anti-slip design of the top triangular cone avoid furniture sliding around,TPU Rubber Lower Layer design protecting the floor from scratchesand reduce vibration. ROOM for IMPROVEMENT: Adjustable bed risers system instantly creates additional under bed storage space, easy to clean. SIZE: S-LxWxH:7.8x7.8x4cm or 3x3x1.6in M-LxWxH:7.8x7.8x7.5cm or 3x3x2.9in L-LxWxH:7.8x7.8x11cm or 3x3x4.3in XL-LxWxH:11.5x6x4cm or 4.5x2.3x1.6in XXL-LxWxH:11.5x6x7.5cm or 4.5x2.3x2.9in 3XL-xWxH:11.5x6x11cm or 4.5x2.3x4.3in