Does your pillow keep slipping into the space between your mattress and the bedhead or wall? Fill the gap and you can sleep in greater comfort! This cleverly-designed cushion will also prevent books, toys and phones from disappearing under the bed! It’s made from a 15 x 15 cm x 15cm wedge of solid foam with a cotton cover that zips off for washing. And, at 93 cm, 140 cm, 152 cm or 180 cm wide, it will fit most standard beds.