A Merino, Cashmere, Microfibre blend that is ridiculously soft and machine washable yet reasonably priced. The PERFECT yarn for Knitting Pure & Simple Patterns, as well as lots of Debbie Bliss creations.
Not finding a color you like, or looking for more options?
Anzula For Better or Worsted Yarn is a similar yarn: merino wool, machine wash, 4.5 sts / inch, on size 8 US needles. You make also like Berroco Captiva Yarn, which is another similar yarn: machine wash, heavy worsted/aran (16-18 sts/4 in), 4.5 sts / inch, 50 gram, and on size 8 US needles.