I've had two fine-knit wool jerseys that were great in hot weather. They were short sleeve. Typically, the aren't made anymore. They were cheap, too, compared with other similar jerseys of both artificial and natural fibres.

Some of the outdoor apparel manufacturers are continuing development of merino wool and silk garments. But as with all outdoor apparel, the products are overpriced.

If anyone finds a source of cheaper, fine-knit Merino jerseys, let me know!!!!