This product contains 20 Iray Shader Presets for silk and velvet surfaces. 

Included are 10 presets for silk, 10 for velvet, 4 glossiness intensity presets, 4 bump intensity presets and 5 tiling presets. 

Those settings are not limited to the presets and can be adjusted of course freely in the surface channels to values you need as well. 

The image maps are seamless and in a resolution of 2048x2048. 

This product is also a Merchant Resource. 

Merchant Resource Usage:
You may use the included shaders and image maps to
create your own commercial products (no free products).
You are allowed to use copies of the included maps in your own product to create shaders and material presets.
You MUST NOT use the shaders and image maps to create another merchant resource or another similar shader/material only product.
Usage of this resource must be stated in your product Readme, credits or description.