http://www.notonthehighstreet.com/greenchild/product/baby-sleeping-bag-fairys?utm_source=GoogleShopping&utm_medium=Baby%20&%20Child&utm_campaign=185238&gclid=CIa82fe_zbYCFVMQtAodzX0AxQ
How to describe it, its like a sack with straps (or dungarees but instead of two legs its closed off like a pillow) that the baby goes into to go to sleep, recommended by Midwives over here as they reduce the risk of cot death as baby can't shimmy down into them, cant pull them over their faces etc x