The HSN code for T-shirts, Singlets and other vests, knitted or crocheted are as follows: 6109 10 00 - Cotton made 6109 90 00 - Of other textile materials 6109 90 10 - Of synthetic fibres 6109 90 20 - Of artificial fibres 6109 90 30 - Of silk 6109 90 40 - Of wool or fine animal hair