CarharttMen's MBL131 Base Force® Heavyweight Base Layer Poly-Wool Crew - Medium - Black Heather

Happy with purchase. This is terrific as a base layer—light weight but warm, very comfy and soft.

I have been looking for a base layer for months and this one fits great, warm and light.

Thin. You can see through it.

This product is advertised as heavyweight. The packaging that arrives is clearly labeled as midweight. The model number matches though - the material is also extremely thin, similar to a normal tshirt.

Heavyweight ......NO!............... Shrinks quite a bit enough so it can't be tucked in, Kinda useless. If this is heavy weight i wonder what the mid weight are like? Bubble wrap with no air?????

This is lightweight. Passing this off as heavyweight is a really stretches the truth.