Our WarmSkin shirts and pants are designed to fit snug.  Because we use some great fabrics, a snug fit keeps your body warmth in.  And our fabric is wickable and breathable. The 4" longer sleeve with thumb holes allows for additional coverage when you put your gloves on. It should prevent the air from blowing up the sleeve of your jacket.  Additionally, our WarmSkin shirts have a longer back which means every time you bend over, the shirt will not come out of the pants.  Also, it gives additional coverage for the "butt".

Measurements for Women - WarmSkin Shirts & Pants

To ensure the best fit for women, you’ll need to measure the bust, waist, and hips.

Measurements for Men - WarmSkin Shirts & Pants

To ensure the best fit for men, you’ll need to measure the neck, arm/sleeve, chest, waist, and inseam.