Hey I checked and it's 100% wool, pretty sure it's this model: https://www.ridgemerino.com/collections/merino-wool-hoodies-mens/products/mens-hyde-merino-wool-hoodie-full-zip?variant=29633314881645

They may have made some changes here and there but it looks dead-on to the one that I have. It's "medium" weight, athletic but not stupid skin tight fit.