Folding Bed Rail for Toddlers,Baby Bed Rail Guard with Reinforced Anchor Safety System,Fit Bunk,Full Size,Queen,King,Twin(White,71"x23.6")

The 3 gears can match different mattresses

1 Gears：Fits mattresses over 7".

2 Gears：Fits mattresses in the range of 4.7"-7".

3 Gears：Fits for mattresses with a thickness of less than 4.7".