Synthetic is also luxury. Dumas mattress toppers are delicately filled with a generous, soft polyester fibre. The cover is made from pure white cotton twill, which is incomparably soft and robust. Thinner than a down or feather mattress topper, the synthetic mattress topper adds soft, plump comfort to your mattress. This combination of bedding items, which is highly prized by the major hotels, offers an exceptional night-time experience and helps you fall asleep and get a deep night's sleep. The prestigious Barrière hotel chain has relied on Dumas Paris for its synthetic mattress toppers for many years.