This hat is great for those wanting something warm and cosy in the Autumn and Winter months. The standard hat pattern included will be a loose fit on an adult female and a regular fit for an adult male. If you would like the female to be a tighter fit then I would recommend going down to a 3.5mm needle instead. The yarn I used was a UK brand called Knit & Purl using their acrylic DK weight yarn. If you cannot find this brand then any type of DK yarn will knit up absolutely fine.