From Yarnundyed website:

“4ply “Deluxe” Sock Weight (4/16Nm)

85% Superwash Extrafine Merino (19.5 micron) 15% Nylon Yarn

The extrafine merino wool makes this yarn luxuriously soft and bouncy for next to skin comfort. A little nylon is added for extra durabilty.

One of our best sellers. This yarn is so versatile and can be used for any next to skin project (scarves, jumpers etc) as well as items where a little more durability is required such as socks and gloves.

Approx. 400m per 100gm hank
1 x 100gm hank

Recommended Needle Size: 2.5 - 4mm needle
Gauge (stocking stitch): 28sts x 36 rows over 10cm/4 inches on 3.25mm (US 3) needles”