https://www.amazon.com/Geometry-Blocking-Hardcover-Notebook-Journal-100/dp/B07F463P8J/ref=lp_20697068011_1_9?srs=20697068011&ie=UTF8&qid=1607473097&sr=8-9&th=1

Looks to be a 100gsm, light grey dotted, and non-perforated dotted journal! from a brand called Miliko