Isager TvinniIsager Tvinni is a 3 ply light fingering weight yarn comprising 100% merino wool. Each hank of Tvinni contains 100 g of yarn and has a length of approximately 510 m. Tvinni was developed by Marianne Isager and the Danish spinning mill, Skive Uldspinderi. It consists of the finest merino quality, virgin wool, and first cut lambswool. The long and fine fibres make a very durable quality. Isager describes this as their finest yarn, which wears out