The Single Skein Mystery Box will arrive every month with a single skein of hand dyed sock yarn. Each skein is 100 grams of fingering yarn, wool and nylon. The colorways have been featured in our sock yarn subscription box. Each colorway is unique to the shop. 100 grams is enough for an adult pair of socks, a scarf or a shawl. This box is for knitters who enjoy quality yarn without any extras in the box