The third option, a Viscose cover, is a 50/50 blend of viscose and wool. This option is a well priced high quality fabric with excellent performance properties.
Note: the mattress is not expected to last the life-time of the hammock as it will naturally compact and felt-up with use. It can be washed if necessary but will never be the same so we do recommend you use a wool protector at all times.
Washing instructions: spot wash only. If a deeper clean is required, gently hand wash at a luke warm temperature using only wool detergents and dry flat in the sun.