There is very little research on the safety aspects of weighted blankets or their usefulness in improving children’s sleep. Although many manufacturers publish positive blog posts from satisfied clients, there is a lack of clear evidence to say they work. In fact, they may be harmful — especially if used incorrectly. Safe-sleeping experts, Red Nose, advise against loose bedding for children, particularly when they’re in a cot. This is because blankets and bed clothing can cover the baby’s head and face, increasing the risk of overheating and suffocation. Young children may not have the mobility or strength to get out from under a weighted blanket. The risks of sudden unexpected death in infancy (SUDI) is also increased when a baby is sleeping prone (on their tummy), and this increases again when they’re under heavy bedding. The weighted beads also pose a choking risk if they escape from the blanket’s pockets.