Our baby started rolling and wriggling around her cot-bed at three months old and simply wouldn't stop! We would find her all over the place - left side/right side, top/bottom or on her front/back but the main problem was her crashing into the sides of the bed. We would hear all manner of bumps and thuds during the night, usually followed by a cry, so the wriggling was affecting her sleep. In the morning her legs or arms would be stuck out the side of the cot. We bought this item as we wanted something to cushion the blows and to still allow her to breathe (she often wakes up with her face pushed right up to the side of the bed). It has really done the trick; her sleep quality is better and we are happy that there is no risk at all (unlike with regular padded bumpers) due to the mesh material the item is made of. The velcro fastening allows easy fitting and adjusting. As she gets older, and starts to stand, she will probably be able to stand on the sides of the material and pull it down but she certainly couldn't use it as leverage to climb over the top - it's too soft. I would definitely recommend this item. It's a must for a wriggly and rolling baby.