Juniper Moon Farm Herriot Great Yarn is a similar yarn: heavy worsted/aran (16-18 sts/4 in), 4 sts / inch, 100 gram, and on size 10 US needles. You may also like Swans Island EcoWash Aran Onesies Yarn, which is another similar yarn: merino wool, machine wash, heavy worsted/aran (16-18 sts/4 in), and 4 sts / inch.
What about yarn that have the same look and feel? Find more yarn with a smooth / uniform texture, a high energy twist, and is machine dyed.
You may enjoy taking a look at the Hikoo Simpliworsted Long Cabled Coat, Hikoo Simpliworsted Painterly Pinks Blanket, HiKoo SimpliWorsted Kitsunetsuki Cardigan, and Hikoo Simpliworsted Marl Kittenish Girl's Sweater kits all using HiKoo SimpliWorsted Yarn.
Hopefully our suggested project ideas for HiKoo SimpliWorsted Yarn can help you come up with your next exciting new project idea!