I wear this (https://www.ems.com/ems-womens-merino-wool-base-layer-crew-neck-pullover/35116300092.html) with a thin shirt like this underneath (https://www.ems.com/ems-womens-essence-peak-long-sleeve-tee/34680000089.html). I think it would probably not be too itchy without a shirt underneath, I'm just always cold so I wear one wool shirt all week with a new thin shirt every day.