This set is made up of six 10g (40m) mini skeins of sock yarn and the pattern for the hat shown. These are hand dyed in small batches so each one is different. One set is enough to knit a blue/green hat similar to the ones shown. If you want it slouchy you can use all the skeins, if you want it more fitted you will have two skeins leftover. The yarn is 75% superwash wool and 25% nylon.