These bed lifts risers not only easy for robotic vacuum go under furniture without stuck, but also raise furniture for additional storage space underneath. Couch risers also easier for elderly, tall, or disabled person 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. Our table risers are made of high quality thickened plastic, which is strong enough to support any heavy furniture for home or office. The internal reinforcement ribs design greatly increases its load-bearing capacity. They can safely support a total of up to 2000 lbs (when bed frame risers are used together). The bed risers heavy duty can carry the weight of bed raisers for dorm twin xl, size bed, queen bed, etc. The four-sided barrier protection on top can fit different furniture legs. The desk risers's recessed cups are 2.78 inches wide and 0.7 inches deep, allowing it to fit securely on the legs of a bed, as well as conveniently on a sofa, desk, or table. Our table risers are made of high quality thickened 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. Top bulging triangle and rubber bottom of the desk risers can firmly grip the furniture legs, shock absorbing and anti-slip to avoid furniture sliding, protect the floor from friction and reduce noise. Color: Black Material: plastic Package Contents: 8 x Furniture height increasing pad 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.