Cuddle Mates are special because of their shape. Perfect for 'tummy time' exercises. Ideal prop or wedge. As babies reach their first birthday, Cuddle Mates help them to sleep more comfortably in the safe and healthy side sleeping position. The size and shape of Cuddle Mates encourages little children to sleep independently. Cuddle Mates have been endorsed by Child sleep expert and author, Lisa Clegg. 'Cuddle Mates help to encourage children to sleep independently. Many sleep more soundly and comfortable in the natural side sleeping position promoted by Cuddle Mates. I would recommend this product to any parent to encourage good sleep habits.' Cuddle Mates are made from 100% super soft cotton and filled with premium hollow fibre polyester. They are completely machine washable.