This silk thread can be gently washed by hand, color will not fade.This package contains 50 small skeins of silk threads, each color / skein is about 20-22 meters in length. Quantity: 10bunch, 5 colors in each bundle, that is 50 skeins / 50 colors/1000 to 1100 meters. this mulberry silk thread can not be run on machine. Instructions: rub some lotion into your hands before working it -- it is so delicate that it will catch on any rough skin or nails;it should be handled with care,or they'll get tangled, unknot the skeins by pulling gently on each end ; and do stretch the opened skein between two uprights (pitchers,yarn winder, two chairs,or an upside down side table! Whatever works for you!) so it holds its tension as you wind it onto the bobbin. This silk thread take patience to handle with,and also takes time to organize, I don't recommend it to those who are not patient enough or in a hurry of time.