Pants are knitted in kauni wool yarn.And pants has a vintage look,Regarding the size it is up to 6years.You will need circular needles 3mm 40 and 60 cm.And elastic band.Because the yarn has a 600m per skein you will need 1-2skeins.Regardind the color I knitted the pants in color nr.CC.Highly recommend to test out this yarn.It is easy to knit with and pleasent to wear.