1:Thread is made from best 100% pilyester yarn with high tenacity and low friction by Japanese silicon oil. ... , 40S/3, 50S/2, 50S/3, 60S/2, 60S/3 Yarn count Usages 20/2 Jeans ,shoes,caps,leather products,etc ... Jeans,tents,leather products,handbags,shoes,ect 40/2 Trousers,coats,suits,shirts,ect 40/3 Protective suits,art crafts,shoes,etc ...