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-IP AND SHOCK ABSORPTION:Anti-ip design of the top triangular cone avoid furniture iding 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-L*W*H:7.8*7.8*4cm/3*3*1.6in M-L*W*H:7.8*7.8*7.5cm/3*3*2.9in L-L*W*H:7.8*7.8*11cm/3*3*4.3in XL-L*W*H:11.5*6*4cm/4.5*2.3*1.6in XXL-L*W*H:11.5*6*7.5cm/4.5*2.3*2.9in 3XL-*W*H:11.5*6*11cm/4.5*2.3*4.3in