The Waterproof and Wipe Clean Fitted Sheet is not only waterproof, wipe clean and soft but it is also Flame Retardant to BS7175 Source 5, and carefully manufactured from a pale green tinted, durable, non-woven polypropylene.The protector can be wiped clean with warm water and detergent for easy maintenance, and is designed use under normal bedding. It will not harden or crack with normal use and so is suitable for long term use, making it both economical and practical, saving time and money.