Plotulopi
You can find this pattern on

Since Plötulopi is an unspun yarn, it is fragile to knit; however, due to the length of its fibres, it knits into a sweater that is both sturdy and soft.
100% new wool, unspun yarn
Sold by weight as a one-ply, flat roll, called a "plate".
100 g (3.5 oz) plates approx. 300 m (328 yd).
Gauge-1 ply: 19 sts to 10 cm (4") over St st using size 4½ mm (US 7).
Gauge-2 ply: 14 sts to 10 cm (4") over St st using size 5½ mm (US 9).
Einband Lopi
You can find this pattern on

or buy the book:

Garments made from Einband stretch and are therefore difficult to measure before they have been washed.
It’s recommended to make a swatch, rinse it and block it and measure it when dry to find the exact gauge and needle size to achieve accurate measuremrents in the finished piece.
After washing, the wool becomes soft and manageable.
Weight:
lace
Meterage:
273 yards(250 meters)
Unit weight:
50 grams (1.76 ounces)
Gauge:
varies
Fibers:
100% Wool - Icelandic
Texture:
singles
Álafosslopi
For warm winter garments that breathe Álafosslopi is the right yarn.
Clothes knitted from Álafosslopi are cozy and lightweight.
Weight:
Bulky
Meterage:
109 yards (100 meters)
Unit weight:
100 grams (3.53 ounces)
Gauge:
13.0 sts = 4 inches
Needle size:
US 9 - 10½ or 5.5 - 6.5mm
Fibers:
100% Icelandic Wool
Texture:
2-ply
Lettlopi
Léttlopi produces garments that are comfortable to wear indoors or outdoors.
Léttlopi yarn is half the weight of Álafosslopi.
Weight:
Aran
Meterage
109 yards(100 meters)
Unit weight
50 grams (1.76 ounces)
Gauge
18.0 sts = 4 inches
Needle size
US 6 - 8 or 4 - 5mm
Fibers
100% Wool - Icelandic
Texture
singles
Care: Dry Flat, Hand Wash Cold