MMX Knitted Fabric and Patterns 4 for Iray gives you 8 ribbed knit fabric options, with 45 fabric colors, 25 patterns, 35 pattern colors and additional presets.
Fabric options included tiling up to 40x, plus displacement strength and sub-d displacement level.
The pattern options included tiling up to 25x and pattern strength which has to be applied manually as it will not apply with the pattern presets.