Lang Yarns Viva - This colourful gradient yarn is made of 100% soft merino wool and can be used for all kinds of projects. The yarn is suitable for knitting as well as crocheting. Lang Yarns Viva is the thicker version of the Mille Colori Baby in the same stunning colourways. 10 ply. 50 grs - 110 mts. Superwash.4.5 mm needles.