Can you recommend a cotton insulation?

Try Bonded Logic Ultra Touch insulation. This is a natural fibre insulation manufactured from 85% recycled cotton. It contains no harmful man-made fibres or chemical irritants such as formaldehyde. Ultra Touch does not require a warning label; it is safe to manipulate. The natural fibres used are 100% recyclable. Insulation Value: Ultra Touch has four products available ranging in R-value from R-13 to R-19. This insulation is available from the Environmental Home Centre in Seattle (www.environmentalhomecentre.com) and Environmental Building Supplies in Portland (www.ecohaus.com).