[Sturdy And Stable Bed Risers] Our table risers are made of thickened PP plastic, which is strong enough to support any heavy furniture for home or office. The internal mesh reinforcement design greatly increases its load-bearing capacity. [Stable Furniture Risers 4 Inch] Top diamond-shaped foam pad of the desk risers 4 inch can firmly grip the furniture legs, shock absorbing and anti-slip to avoid furniture sliding, protect the furniture legs from friction and reduce noise. [Practical And Versatile Bed Risers] These bed lifts risers not only easy for robotic vacuum go under furniture without stuck, but also raise furniture for additional storage space. Couch risers also easier for elderly to get up from the couch and elevate a workbench to bid farewell to back pain, and even lift the head of bed to help nighttime reflux issues. [Suitable For Variety Furniture] These bed lifters are suitable for any square legs ( less than 2.1 x 2.1 inch), round legs ( less than 3 inch ) and rectangular or irregular furniture legs ( less than 2.1 x 2.1 inch). Compared to other table leg extenders, our chair risers are sturdy enough to hold heavy duty furniture like bed, chair, desk, cabinet, sofa, table, TV stand, etc. [Easy To Install] Simply place the 4 inch furniture riser directly under your furniture. Actual lift height: 3.4 inch. Total hight: 4 inch, Groove depth: 0.6 inch, Bottom diameter: 5.2 inch. Color: Black Material: plastic Package Contents: 4 * Furniture Risers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.