Pretty snug for a medium. It does say "slim fit" in the description. I was kind of expecting it to be a midlayer but will definitely only fit as a base layer. The other item I purchased in a medium from here was a bit big on me. Wish I would have sized up! Overall it seems like a really nice product however it's a bit constricting because of the size.

Biceps Beware!!

Upper sleeves Too Tight! Returned it. I'm a good fit in OR Medium. But this item strangled my biceps. Lots of fit active women have some volume in their upper arms - get with it!

Perfect Ski Base Layer

This shirt is SO warm and comfortable. The built in hood/mask is great. I wear it as my base layer skiing and it keeps me cozy, and covers my mouth / nose perfectly. My only complaint is the sleeves are a bit long so I fold them back for under my coat.

Runs Way Small.

Made way too small I normally wear a medium and ordered a large so it would be loose fitting. I ordered it to take on a trip and it came at the last minute so I untangled and washed. Tried it on and it is too tight.

Great Hoodie

It's pretty tight but I used it as a base layer so that was fine just uncomfortable to get on at first. Hood and gator both came all the way across the face and stayed. It was a perfect addition to my base layers. I don't like balaclavas or buffs because I still feel a breeze on the back of my neck