The KCT 8 Piece Stackable Bed and Furniture risers are a lightweight solution to many household problems. The plastic, "Elephant Feet" design risers are extremely strong and can help raise any bed, sofa, chair or piece of furniture by up to 8 Inches. The risers can lift the legs to make the bed at a suitable level for those that struggle to get in and out of lower based units, especially elderly and those with medical conditions. The risers can also elevate the height of chairs and sofas to also help those with mobility issues, making it easier to get in and out of any chair, sofa or bed. Not only that, but the risers can help increase the storage space under a bed, giving you more options for space saving, ideal in small rooms and college dorms. Each riser has an intergrated top recess that holds the base of the leg and is suitable for a range of legs from flat base to those on castors. The recess helps to prevent movement and holds the leg in firmly. The wide base and narrow top of each riser gives them the stability needed while in use and can be used on any surface. Provided in each pack are 4 x 5" Risers and 4 x 3" Risers. Stack the smaller part onto the secure lip of the larger one to create a 8" overall height difference. Max weight capacity (of any combination of riser) is 1300lbs Dimensions 3" Riser Overall (LxWxH):131mm x 131mm x 99mm Top Recess (for leg) (LxWxH):70mm x 70mm x 19mm Base to Recess: 76mm (3") 5" Riser Overall (LxWxH): 190mm x190mm x 150mm Top Recess (for leg) (LxWxH): 75mm x 75mm x 25mm Base to Recess: 127mm (5") Both Risers Stacked together Overall (LxWxH): 190mm x 190mm x 223mm Top Recess (for leg) (LxWxH): 70mm x 70mm x 19mm Base to top recess: 203mm (8").