Hiccapop bumpers are the perfect height and ideally sized to allow ample room for your little one to stretch out while sleeping. These bumpers fit toddler beds, twin, full, double, queen and king beds, but Do NOT use on top bunks or loft beds. Hiccapop bumpers install safely in seconds, fits under all deep-fitted sheets and has a soft, washable cover with silicone beaded non-skid fabric stays firmly in place. Unlike traditional metal bed rails, hiccapop bumpers install safely in seconds and passes all federal safety standards for bedrails; NEW, but in packaging instead of tags.