Our sleeping companions for our babies are made of 100% cotton and 4 layers of muslin fabric. 40x40 cm dimensions OEKO - TEX Certified Fabrics No chemicals that harm baby skin have been used. Product colors may vary slightly. This may be due to many reasons such as screen-light brightness settings and light angles. Why is a sleeping companion important? One of the most effective ways to ensure that your baby maintains a sleep routine - sleeping uninterrupted for long hours - and does not need you while sleeping, is to have a sleep companion. Moreover, regardless of the sleep training model you choose, your sleep companion will be your most important assistant at this point, which will make your job much easier. In addition, a sleeping companion plays a big role in overcoming the insecurity and fear of sleeping separately while getting used to you, your scent and your presence. Why is sleep mate important? One of the most effective ways to ensure that your baby has a sleep routine- sleeps for long hours without interruption and does not need you while sleeping is a sleep companion. In addition- whatever sleep training model you choose- your most important assistant will be your sleep companion- which will make your job much easier at this point. In addition- the sleeping companion has a great role in overcoming the insecurity and fear of sleeping separately while getting used to you- your smell and your presence.