Rahulik means “calm”, “quiet” in Estonian. It was a very unproblematic, calm (but not borring) minimalist project from one of my favourite yarns. I have not weighed the sweater but based on my experience with the yarn, I think it is something about 170-180 g. Can imagine the same pattern in a lighter yarn or in a summer yarn. If you wish, there will be a pattern (and then I’ll need volunteers for test-knitting). Sock yarn (100 g/400-410 m) would be a good substitute.
On my blog.