A new loose fill insulation launched by 3M closely mimics the look and performance of natural down, the company says, with two times the loft when wet and without the allergens.

3M Thinsulate Featherless Insulation is described as lightweight, highly breathable and provides extreme warmth for extreme conditions. In addition, it is warm even when wet and loftier than down at the same basis weight.

The new product extends the 3M Thinsulate Insulation line made from microfibres or fine fibres which is used in jackets‚ trousers‚ gloves‚ hats and boots.