Question 1

Does this thermal set run true to size, or should I size up?**

Accepted Answer

Based on extensive customer feedback, many find the fit runs slightly small, especially the bottoms. For a comfortable, non-restrictive fit that's ideal for layering, we generally recommend **sizing up**. If you're between sizes or prefer a snugger base layer, your usual size may work. Checking our detailed size chart (provided on the product page) against your measurements is the best way to ensure a perfect fit.

Question 2

Is this warm enough for activities like skiing or snowboarding?**

Accepted Answer

Absolutely! This set is a favorite among winter sports enthusiasts as a **mid-weight base layer**. It provides excellent moisture-wicking warmth under your ski jacket and pants. However, as noted in some user reviews, if you're facing extreme sub-zero temperatures or are very sensitive to the cold, you may want to pair it with an additional mid-layer for maximum insulation.

Question 3

How does the material hold up after washing? I've seen comments about pilling.**

Accepted Answer

The soft fleece lining provides incredible comfort, but like many brushed fabrics, it can be susceptible to pilling in high-friction areas over time. To maximize durability, we recommend **washing inside-out on a gentle, cold cycle and laying flat to dry** (avoiding the dryer). Following these care instructions significantly reduces pilling and helps maintain the set's softness and shape wash after wash.

Question 4

Can I wear this thermal underwear by itself, or is it too thin?**

Accepted Answer

This is designed primarily as a **base layer**, meaning it's form-fitting and thin to effectively trap heat without adding bulk under your regular clothes. While it's fine for lounging at home, it's not intended to be a thick, standalone sweatsuit. Think of it as your secret weapon for warmth—incredibly effective under jeans, sweaters, and outdoor gear, as countless happy customers on social media have confirmed.

Question 5

What if the size doesn't fit me correctly after I receive it?**

Accepted Answer

No problem at all! We offer a straightforward return and exchange process. If the size isn't quite right, you can initiate a return through your account page. We recommend doing so promptly to ensure you have your correct size in time for the cold weather. Please review our specific return policy page for details on the time frame and any conditions.

WEERTI Thermal Underwear for Women Long Johns with Fleece Lined Base Layer Women Cold Weather Top Bottom

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