Made from 54% Silk and 46% Linen. Silk is a fine and durable material created when the mulberry silkworms form their cocoons. Silk is one of the strongest natural fibres with natural elasticity, it is breathable - helping you stay warm when it is cold and cold when it is warm. Linen is made from the fibre of the flax plant. It is a natural fabric with breathing properties that allows it to adapt depending on temperature. It is a sustainable material since the flax plant can grow in poor soil and is resistant to many diseases.