Smartwool Men's Classic Thermal Merino Base Layer One Piece
Smartwool Men's Classic Thermal Merino Base Layer One Piece
Smartwool Men's Classic Thermal Merino Base Layer One Piece
Smartwool Men's Classic Thermal Merino Base Layer One Piece
Smartwool Men's Classic Thermal Merino Base Layer One Piece
Smartwool Men's Classic Thermal Merino Base Layer One Piece
Home / Essentials

Men's Classic Thermal Merino Base Layer One Piece

Regular price$250.00
/
Shipping calculated at checkout.
  • Low stock - 7 items left
  • Backordered, shipping soon

Color
Size
  • Free Domestic Shipping On Orders Over $150 (Excluding Oversized and Bikes)
  • Add To Cart For Final Price
Men's Classic Thermal Merino Base Layer One Piece

Meet the Men's Classic Thermal Merino Base Layer Crew One Piece, which provides a full-body layer of warmth. This 100% Merino wool one piece combines the moisture management, temperature regulation, and odor resistance of Merino with the comfort of an interlock knit. Featuring a fully functional fly, a zippered drop seat, set-in sleeves, and a flatlock seam to help prevent chafing, this base layer is designed for easy wear and maximum comfort.

100% Merino Wool
Interlock knit fabric delivers natural moisture management, temperature regulation, and odor resistance against the skin for full-body warmth
One-Piece Coverage
Single-garment solution eliminates the baselayer gap at the waist—no exposed skin between top and bottom on the coldest days
Slim Contour Fit
Body-hugging silhouette follows the contours of the body for a layer-friendly fit without bulk under mid- and outer-layers
Zippered Drop Seat
Rear zipper at the seat makes nature breaks quick and easy—no need to strip down on cold days
Fully Functional Fly
Standard front fly for quick convenience
Set-In Sleeves
Classic tailored sleeve construction sits naturally on the shoulder for unrestricted arm movement
Forward-Wrap Side Seams
Side seams wrap to the front of the body for a more distraction-free fit under backpack straps
Flatlock Seams
Offset seam construction minimizes chafing during high-output activity or long days on the mountain

General

Product Type
Base Layer One Piece
Base Layer Style
Classic Thermal Merino
Fit
Slim
Gender
Men's

Materials

Body Fabric
100% Merino Wool (Interlock Knit)

Measurements

Available Sizes
S, M, L, XL, XXL
Origin
Made in Vietnam

Machine wash warm on a gentle cycle. Wash with like colors. Do not bleach. Tumble dry low. Cool iron as needed. Do not iron decoration. Do not dry clean.

Shipping Policy

Components:

All component items (wheels, drivetrains, suspension, brakes, etc.) ship within 4-7 business days of purchase.

Bicycles:

Complete bikes typically ship within 2–3 weeks due to build, tuning, and inspection times. You will receive tracking information as soon as your order is ready to ship.

Riding Gear & Apparel:

Riding gear and apparel orders (helmets, jerseys, gloves, etc.) ship within 3-10 business days.

Returns & Exchanges:

If you received the wrong size or wish to exchange an item, it must be returned in original condition—unused, uninstalled, and with all packaging intact.

For full details, please see our Refund Policy before initiating a return.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

Prepared with intention.

Every product is carefully inspected and handled by our team before it ships. From fit and function to final details, we make sure each piece is ready for the outdoors ahead—so you can focus on the experience, not the gear.

Passion drives us

At SpokeX Bike Co., bikes aren't just our business — they’re our way of life. As a rider-owned and operated shop, every decision we make comes from firsthand experience on the trail, at the race, and on the open road. We know what it’s like to chase a new line, push through the pain cave, and celebrate the ride — because we live it every day.


Recently viewed