The 11 Best Lightweight Sweaters for Men

We play the field in terms of fabric here, but in my opinion you have three really good options. Those are

Cotton: The least breathable and heaviest. If you get it in a high-twist it can do the job. Or, some brands go in the opposite direction with a chunky cotton in a loose knit, giving you some openness to airflow.

Linen: Do I need to explain further? It's the go-to fabric for anything lightweight and summery.

Merino Wool: One of the best natural temperature-regulating and moisture-wicking fabrics on the planet. There's a reason this is used for high-end baselayers. Again, though, you want to be cautious of the type of merino. This Bugatchi sweater is made from a high-twist version, similar to the baselayers I'm talking about.

Then, there are two other options that get used a lot.

Cashmere: Physically, this is very lightweight. But if we're talking lightweight in terms of temperature retention, it's not exactly. Cashmere is going to keep you warm. It can be good for summer weather, but it's more situational.

Polyester, Polyamide, and Nylon: All versions of the same sort of synthetic fabric. Great for keeping garments cheap and adding a bit of moisture wicking, but I prefer to go all natural since there are so many great options for it.