A duvet filling that rivals the beauty of natural down

This filling is unlike any other duvet filling made from ultra-fine nano microfiber that closely resembles natural down. The term “Nano” refers to the very fine, small particles that give this filling its extraordinary softness, just like the finest natural down feathers.

Outer fabric: 100% natural cotton.
Inner filling: Nano microfiber – a feather alternative with delicate, down-like softness.
High loft design that adds luxurious volume to your bed.
Provides up to 70% of the natural down sleeping experience.
Maintains its fluffiness and density even with long-term use.
Breathable fabric keeps skin comfortable and body temperature balanced while sleeping.
No clumping – filling is quilted on all sides with the outer fabric for even distribution.
Corner fabric ties to secure the filling inside duvet covers, ensuring stability even without clips.
Hypoallergenic and skin-friendly, offering safe and healthy sleep.
Antibacterial and odor-resistant, as it does not retain moisture.

Fabric

Outer cover: 100% natural cotton.
Filling: Nano microfiber feather alternative.

Available Sizes

The Nano duvet filling comes in popular, family-friendly sizes:

Super King: 260×240 cm
King: 250×230 cm
Full / Queen: 200×230 cm
Twin: 140×200 cm

Washing Instructions

Dry clean only – avoid hand or machine washing at home to maintain quality and prevent clumping.

Warranty

Comes with a 1-year warranty against clumping, provided care instructions are followed.

Our Cotton Care at Karaz Linen

We wash and comb long-staple cotton fibers before weaving, creating a durable, premium-quality cotton fabric that ensures strength, comfort, and long-lasting softness.