Rochingham Green Bear Cot Mattress organic cotton / Palm is a top of the range baby mattress offering superior support & year-round comfort for your baby. The mattress is constructed from 100% biodegradable palm fibre, a natural plant substitute for traditional mattress fillings, obtained from leaves of the dwarf palm. Soft new wool in the mattress offers great thermal properties, helping to keep your baby coll in summer & warm in winter. The mattress cover is made from natural unbleached organic cotton produced under fair trading conditions. The cover is soft, breathable & very comfortable for baby to get a good nights sleep. There is an adjustable water proof membrane inline with the nappy area.