The ULTRAGlass shader is a high quality, highly customizable glass shader which comes with 6 meshes, 5 materials and 15 preset instances for you to experiment with.

The glass shader allows you to customize the aberration, imperfection maps, normal maps, refraction, caustic and base color, and various other variables, which can be seen in the instance window in the images above.

You can add your own normal and imperfection maps to the glass shader, or disable them completely, the choice is yours!