Microfibre and hollowfibre fills are both synthetic fills made from polyester. Both microfibre and hollowfibre are fine fibres ranging in denier.
Hollowfibre is slightly denser than microfibre and has a full, springy feeling that creates a lovely puffy duvet. Its low price makes it a great-value duvet filling.
Both microfibre and hollowfibre are machine washable, making them very easy to care for.
Microfibre is finer and feels soft and silky. Premium microfibre is often used as a substitute for the softness of down in synthetic duvets.