Upgrade your space with these adjustable heavy-duty bed risers. Use them individually at 3.9"" or 5.8"", or stack them together for an 8.8"" lift. Made from durable high-strength plastic, they support up to 1,300 lbs and are ideal for beds, couches, desks, and tables. Perfect for creating extra under-bed storage in dorm rooms, apartments, and compact spaces.