When little Carmen was born, our lives changed forever. One of the first things my wife and I realised was how important sleep was - for all three of us.

In their first year, babies sleep for more than 14 hours a day (though not always at night, as new parents know!) Studies show that infants grow while they sleep and that the quality of infant sleep may affect later cognitive ability. That means that giving babies a warm, secure and comfortable place to sleep is vital.

Unconvinced by the products that I found on the market, I decided to start Zizzz.

Many relatives gave us baby sleeping bags as gifts for little Carmen. Though the gifts were certainly well-intended, my wife and I noticed that they all contained polyester filling. Have you ever slept in polyester bedding in a cheap hotel? If so, you probably spent most of the night tossing and turning.