What characteristic of microfibres contributes to vibrant colours?

Microfibres have a higher surface area compared to traditional fibres, which plays a significant role in their ability to absorb and reflect light. This increased surface area allows for more dye to adhere to the fibres during the dyeing process, enabling them to hold and showcase vibrant colours more effectively. As a result, textiles made from microfibres can exhibit a wide range of rich and vivid hues, enhancing their aesthetic appeal.

The other characteristics listed do not directly contribute to the vibrancy of colours in the same way. While certain properties like weight, thickness, and elasticity may impact other aspects of fabric performance, such as drape or durability, they do not fundamentally affect how well a fibre can absorb dyes or reflect light, which is essential for achieving vibrant colours. Thus, the key factor here is the higher surface area associated with microfibres.