Polystyrene beads are small balls with a diameter of 0.5 - 1.5 mm used in rehabilitation pillows. Such filling is used in Ceba Baby relaxation pillows Cebuszka® PHYSIO. The amount of filling in pillows is matter of individual expectations – do you want your pillow to be firm or flexible? Everything is a matter of preference. It is worth remembering that the micro beads, after some time of use, reduce their volume - this is a natural process. The loose structure of the filling allows the pillow to be flexible and makes it fit perfectly to the body. The beads are odorless, antiallergic and light - contains up to 98% of air. Thanks to the additional heat treatment during their production process, they are resistant to biological effects of mold, fungi and bacteria, and therefore they are perfectly tolerated by allergy sufferers. The product is certified by the Oeko - Tex Standard 100.