Abs Plastic Upgraded Design: On the top of these 1.5 inch bed risers, there are small spikes to avoid slipping and protect your furniture. On the bottom, we provide bottom rubber pad for each furniture riser to prevent scratching your floor Multiple Application: These adjustable bed risers will let you have extra 1.5 or 3 inch in height. It will increase your storage and be easier to clean. You can use sofa risers everywhere in your home such as sofa, cabinets, couch, beds, tables and etc Wide Opening: The width of the opening of each bed riser is 3 inch and the depth is 0.3 inch. Our heavy duty couch risers are more suitable for large furniture legs than other normal bed risers Heavy Duty: Each new design bed lift which made by sturdy plastic can hold up to 500 lbs which means 8 furniture lifts will hold up to at least 4000 lbs. These can easily bear the weight of two adults who have different body shapes Package Content: You will get a set of 8 adjustable bed risers, 8 bottom anti-slip rubber pads and 8 top anti-slip foam pads. These top pads are used for your furniture to increase slip resistance Bed Risers