The MMX Nylon and Fishnet Shaders for Iray is a set of shader presets that focuses on nylon and fishnet styled fabrics.  The nylon has 18 colours with 3 opacity options and 5 shine options.  The fishnet comes in 14 colours and has an option to removed the image maps so you can just use the colours alone as a kind of latex material.  4 patterns in 8 different colours are also included and can be mixed with any of the nylon and fishnet presets.  The nylon and fishnet maps can be tiled seperate from the patterns so that they can be mixed to your liking.  Global tiling is also available.  All tiling options range from 1x1 to 35x35.