A little bit more info...

• Super easy to use. It simply snaps on to the chair in seconds. There's even no assemble required.
• Rubberized feet - non-slip, won’t scratch floors, grips chair legs firmly into place.
• Sturdy design - engineered to improve chair stability, holds up to 300 pounds
• Kaboost easily adjusts to fit 4-legged chairs (round, square or curvy legs). It can be used with chairs that have a diagonal leg distance of between 19.5 inches and 30 inches. Chances are, if you have a 4-legged chair, Kaboost will fit your chair. 
• Kaboost's recommended age range is 2 to 6 years old.
• Two height positions - same heights as standard booster seats (3.75" and 4.5”)