Filcolana Arwetta

Filcolana Arwetta is a soft and durable fingering-weight yarn spun from 80% superwash merino wool and 20% nylon. Originally developed for hard-wearing children's knitwear, it combines comfort with strength, which makes it just as good for long-lasting handknitted socks, lightweight sweaters and everyday garments. The wide range of shades invites you to mix, match and explore.

Yarn details

  • Fibre: 80% superwash merino wool, 20% nylon
  • Meterage: 210 m per 50 g
  • Recommended needles: 2.5–3 mm
  • Gauge: 28–32 stitches = 10 cm
  • Yarn weight: fingering / light fingering (sock yarn)
  • Care: superwash treated and machine washable
  • Wool: the merino wool in Arwetta is mulesing-free

What to knit with Arwetta

The blend of fine merino and nylon gives a fabric that is soft against the skin yet strong enough for garments that are worn often. Arwetta is a favourite for:

  • handknitted socks
  • baby sweaters and cardigans
  • lightweight sweaters
  • colourwork knitting
  • shawls and accessories

Arwetta works beautifully on its own or held double for a thicker fabric. It is also a popular companion yarn: Filcolana's own designs often hold one strand of Arwetta together with Filcolana Tilia, Filcolana Paia or Filcolana Alva to create new textures and colour effects.

Patterns for Arwetta

Looking for a project? Our collection of free Filcolana patterns includes several designs knitted in Arwetta, among them Hugs and Kisses, Quiet Moments, Lorna Sweater, Margrete and the children's sweater Tooti.

Frequently asked questions

What needle size should I use for Arwetta?

The recommended needle size is 2.5–3 mm, giving a gauge of 28–32 stitches to 10 cm. When Arwetta is held double or together with another yarn, larger needles are used – Filcolana's patterns with two strands typically call for 3.5–4 mm.

Is Arwetta superwash and machine washable?

Yes. The merino wool in Arwetta is superwash treated, and the yarn is machine washable. Always follow the care instructions on the ball band.

What yarn weight is Arwetta?

Arwetta is a fingering-weight yarn with 210 m per 50 g, in the same weight class as classic sock yarn.

Can I knit socks with Arwetta?

Yes. The 20% nylon makes the yarn hard-wearing, and the merino wool keeps it soft – a combination well suited to soft, long-lasting handknitted socks.

Not sure how fingering weight compares with other yarns? Read our Yarn Weight Guide.