Review on Helly Hansen Lightweight Breathable Baselayer by Bashar Shaffer

I think these styles run small unless you want them to are very tight. I'm 5'8, 160lbs and wear a medium size in a regular shirt. I originally bought the medium and went for the large which fits perfectly (still fits but isn't skin tight). They keep me warm as a base layer in cold weather and are great for the gym. They wick sweat and keep you dry. Great purchase (I bought 2 more), highly recommend.