In a nutshell the little green sheeps 100 chemical free natural carrycot mattress helps to provide the best support ensuring that your baby has the same natural sleeping environment when out and about as they do at home especially made to fit the bugaboo the combination of the organic wool and cotton used in our mattresses acts as a natural fire retardant meaning that no fireproofing chemicals are used and each one of our mattresses passes uk fireproofing regulations bs 7177 naturally