The CoCoBase Mattress Base is made with a 5 inch durable coconut fiber coconut coir. This new material created by untwisting coconut husks is infused with natural latex. The Spring like qualities of Coconut Coir can be built to utilize the natural weather resistant qualities of the coconut husk. When added to a mattress base the rubbery coconut coir material provides support that other mattresses bases cannot. It is important to know when searching for the most firm options, Coconut Coir has better resistance to pressure than the most dense latex on the market. The ultra supportive Coconut foundation rests in a Quilted Wool Organic Cotton Case.