Are there any knit vests that are good to layer over a basic t-shirt when there's a big daily temperature range between morning and evening?

The knit vest you're looking for is currently not in our records. Instead, I recommend two deep V-neck pullover knits and one short-sleeved boucle knit that are great for layering lightly over a t-shirt. The deep V-neck knits allow for layering with their deeply cut necklines, and the boucle knit is easy to layer thanks to its short-sleeved shape.

I've picked cardigans that are easy to throw lightly over a t-shirt. The AMOMENTO one is 100% merino wool with knit blocking detail, and the MARGESHERWOOD products are basic round-neck styles in a thin merino wool material, making them effortless to put on during transitional seasons.

For cardigans around KRW 100,000, instead of standalone pieces, there are two colors of among's 2-WAY set that come with a camisole. Priced at KRW 139,000, it is an acrylic blend material, and details like the strap hole on the back of the camisole or the pointelle line on the front make it great for versatile styling. The standalone cardigans you saw earlier start in the KRW 170,000 range, so I selected a set option to match your price point.