Smartwool Women's Classic All-Season Merino Base Layer Bottom - Nightfall Blue
The Smartwool Women's Classic All-Season Merino Base Layer Bottom in Nightfall Blue delivers lightweight, year-round performance for hiking, skiing, camping, travel, and everyday outdoor adventures. Made with Smartwool's versatile 150g/m² Merino jersey, these women's base layer bottoms provide natural moisture management, odor resistance, and temperature regulation across changing conditions.
The fabric combines 88% Merino wool with 12% recycled nylon, using a recycled nylon core for added durability while keeping soft 100% Merino wool next to the skin. A slim fit follows the body's natural contours for comfortable layering beneath hiking pants, ski pants, or other cold-weather gear.
A Merino-lined elastic waistband provides next-to-skin comfort, while Merrow stretch stitching improves mobility and fit. The lightweight construction makes these bottoms versatile enough to wear alone in warmer conditions or as a comfortable foundation when temperatures drop.
Features:
- Lightweight 150g/m² Merino jersey
- 88% Merino wool / 12% recycled nylon
- 100% Merino wool next to skin
- Natural moisture management
- Naturally odor-resistant
- Helps regulate body temperature
- Slim, body-contouring fit
- Merino-lined elastic waistband
- Merrow stretch stitching
- 31" inseam in size Medium
- Lightweight construction for four-season layering
- Nightfall Blue colorway
- Ideal for hiking, skiing, camping, travel, and everyday wear
From cool-weather hikes to days on the mountain, the Smartwool Classic All-Season Merino Base Layer Bottom delivers lightweight Merino performance and comfortable layering for adventures throughout the year.
Returns and Replacements
We want you to be completely happy with your order from The Backpacker, so we offer no hassle returns. If for any reason you are not satisfied with your order, we will gladly accept your timely return of unworn or unwashed items. Used merchandise cannot be returned. Items must be in the same condition as when it was received and should include the vendor packaging and tags. Unwanted merchandise must be returned within 30 days of receipt. Please allow 10-14 days for processing of the return. We will not reimburse for expedited shipping costs.
FINAL SALE ITEMS: Any items discounted more than 30% are deemed final sale and cannot be returned.
SEASONAL ITEMS: Due to shortened seasonal demand, items in the categories below have a 14 day return window
Winter Jackets
Snow Pants
Snow Bibs
Snow Suits
Base Layers
Snow Hats
Gloves and Mittens
Helmets and Goggles
Remember to:
1) Include your packing slip with reason for the return
2) Select whether you want a refund, store credit, or exchange
3) Check your email for confirmation of the refund/credit/or shipping of the exchange.
Exceptions may be made on a case by case basis by the customer service manager. To ask about a return or exception please reach out to customerservice@backpackeroutdoors.com
If my order does not fit as expected or I change my mind, can I return it for free?
Absolutely! If you find that your order does not match the description or you simply change your mind, you can return your order for free using the UPS return label or in-store up to 100 days after you’ve received your product.
Can I return or exchange gently worn/used items?
No. Items can only be returned in the following condition:
- Unworn
- Unwashed
- Same condition as purchased
- In original packaging
- With all original vendor tags
This includes defective merchandise.
Used merchandise can not be returned without written approval from a team member of The Backpacker.
What should I do in the event of a broken product?
If you receive a product that is defective or in an undesirable condition, please return the item within 100 days and let us know whether you would like an exchange or refund. Please notify us in advance so we will know to anticipate the item if it doesn't reach us within the 100 day limit.
How do I return my web order?
- Repackage your items including your packing slip with the reason for the return.
- Select whether you want a refund, store credit, or exchange.
- Attach the provided return label to the outside of your package.
- Drop off your item(s) at your local freight delivery access point (UPS store).
- If you did not receive a return label with your order or you need a replacement, email us ar customerservice@backpackeroutdoors.com or message using our Live Chat option available from 8:30am-4pm (cst).
- Check your email for confirmation of the refund / credit / shipping of the exchange.
- Web orders returned to our retail stores outside of Web Team business hours, Monday through Friday 9am - 4pm CST, will be processed on the next business day.
How long does it take for returns to be processed?
Please allow up to 10-14 business days for returns to be processed.

