Towels for various purposes - bath towels, foot towels, hand towels.
A suitable bath for a bath towel is here https://3dsky.org/3dmodels/show/vanna_dzhersi 

For Corona render, it is recommended to install a version at least 1.5, since the glossiness of materials is configured with PBR in mind.
The color of the towels is easy to change in the CoronaMix map.