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805-543-1676 | 10-6 daily, 11-4 Sunday | The Switchback

Clothing
Footwear
- Hiking
  - Hiking Boots
  - Hiking Shoes
- Running
  - Trail Runners
  - Running Shoes
- Climbing
  - Climbing Shoes
  - Approach Shoes
- Snow
  - Ski Boots
  - Snowboard Boots
- Casual & Sandals
- Socks & Insoles
  - Socks
  - Insoles
  - Gaiters
Hike & Camp
Climb
- Climbing Gear
Ski & Snow
Racks & Travel
- Racks
- Bags & Luggage
Accessories
Other
- Gifts & Fun
- Essentials
Sale
Rentals
The Switchback
Brands
- A-D
  - Altra
  - Arc'teryx
  - Black Diamond
  - Burton
  - Camelbak
  - Cotopaxi
  - Dakine
  - Darn Tough
- G-K
  - Goodr
  - Hestra
  - Hydro Flask
  - Jones Snowboards
  - K2 Sports
  - Kuhl
- L-P
- S-Z
  - Smartwool
  - Smith Optics
  - The North Face
  - Thule
  - Toad&Co
  - Vuori
  - Yakima
  - YETI
- All Brands

Baselayer Tops

Home › Baselayer Tops

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Baselayer Top (4)

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Mons Royale (0)
Smartwool (4)

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XS (4)
S (8)
M (13)
L (12)
XL (9)

Smartwool Women's Thermal Merino Rib Turtleneck - Mink-Chalk Violet Heather

Smartwool Women's Thermal Merino Rib Turtleneck

Regular Price: $130.00

Sale Price: $130.00
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SOLD OUT

Smartwool Women's Intraknit Thermal Merino Base Layer Pattern Crew - Deep Navy-Serene Blue

Smartwool Women's Intraknit Thermal Merino Base Layer Pattern Crew

Regular Price: $130.00

Sale Price: $130.00
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Smartwool Kids' Classic Thermal Merino Base Layer 1/4 Zip - Black Ski Day

Smartwool Kids' Classic Thermal Merino Base Layer 1/4 Zip

Regular Price: $70.00

Sale Price: $70.00
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Smartwool Women's Classic Thermal Merino Base Layer One Piece - Currant Alpine Apres

Smartwool Women's Classic Thermal Merino Base Layer One Piece

Regular Price: $250.00

Sale Price: $250.00
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Showing items 1-4 of 4.

About Us

The Mountain Air is a family-owned, specialty outdoor retail store located on the Central Coast of California. Since 1975, we’ve been helping all people at all skill levels explore and enjoy the outdoors.

Call us at 805-543-1676.

Text us at 805-242-2687.

Email us at customerservice@themountainair.com.

667 Marsh Street Suite D
San Luis Obispo CA 93401

Shipping Disclaimer

We reserve the right to change or charge shipping costs based on package size, weight, and distance. We will reach out if different or additional charges are necessary, and appreciate your understanding of our location in San Luis Obispo, California.

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