Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
Smartwool Men's Classic Thermal Merino Base Layer Crew
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Men's Classic Thermal Merino Base Layer Crew

Regular price$125.00
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Men's Classic Thermal Merino Base Layer Crew

Meet the better-than-ever Men's Classic Thermal Merino Base Layer Crew. We've updated this 100% Merino wool fan favorite with new colors and a new fit to improve functionality while enhancing aesthetics. Shoulder panels eliminate top shoulder seams, and a flatlock seam construction helps prevent chafing. Add one of our best base layers for cold weather to your winter wardrobe and experience the difference the next time you go skiing, hiking, climbing, or biking.

100% Merino Wool Midweight Warmth
Single-jersey 100% Merino wool interlock knit delivers natural moisture management, body-temperature regulation, and odor resistance in a midweight 250g/m² weight — the sweet spot for cold-weather starts and stops.
Offset Shoulder & Side Seams
Shoulder panels eliminate top-of-shoulder seams so pack straps and bib straps don't dig into the seam line. Side seams wrap to the front of the body for added comfort under layers and a cleaner fit through the torso.
Flatlock Seam Construction
Flatlock seams sit flat against skin to minimize chafing under layers, packs, and harnesses. Built for long days on snow, ice, and trail where seam comfort makes the difference between finishing and turning around.
Slim Base-Layer Fit
Slim fit intended to follow the contours of the body without bunching. Layers cleanly under an insulated jacket or shell and stays tucked when you reach overhead.
Multi-Activity Versatility
Engineered for skiing, hiking, climbing, and cold-weather biking. Merino's temperature-regulating properties keep you comfortable across output levels without needing to swap layers.
Technology
100% Merino Wool, Interlock Knit Construction

General

Fit
Slim fit
Category
Base Layer Crew
End Use
Cold Weather, Layering
Technology
100% Merino Wool, Interlock Knit Construction
Gender
Men's
Available Sizes
XS, S, M, L, XL, XXL

Materials & Construction

Fabric Weight
Midweight 250g/m²
Fabric
100% Merino Wool. Exclusive of Decoration.
Country of Origin
Made in Vietnam
Washing
Machine wash warm on a gentle cycle with like colors. Use a mild detergent — avoid fabric softeners and bleach, which coat the Merino fibers and reduce moisture-wicking and odor-resistance performance.
Drying
Tumble dry low. High heat can shrink Merino wool fibers and damage the interlock knit over time. For longest life, lay flat to dry when possible — air-dried Merino retains its shape and loft through more wear cycles.
Ironing & Decoration
Cool iron as needed. Do not iron decoration. Printed graphics, heat-transfer logos, and color-block panels can scorch or peel under direct high heat — use a press cloth if ironing is necessary.
Dry Cleaning
Do not dry clean. The harsh solvents used in commercial dry cleaning strip the natural lanolin from Merino wool, leaving fibers brittle and reducing the temperature-regulating properties that make the fabric perform.
Storage
Store folded in a dry, breathable space. Merino's natural odor resistance means you can wear it multiple times between washes — a key performance feature that makes it ideal for multi-day trips and travel.

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.

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Merino Layer System — SW016349

Built For

Cold-Weather Hiking
25° – 45°F
Layer under a shell for ridge traverses and shoulder-season trails. Offset shoulder seams keep pack straps from digging in across long miles.
Skin-Track Days
10° – 30°F
Touring and lift-served laps where you heat up on the up and cool down on the down. Midweight 250 stays in the comfort zone either way.
Daily Winter Wear
15° – 40°F
Under a flannel or sweater on the morning commute, the woodpile, the shop. Looks enough like a tee to wear solo indoors without overheating.
Sleep & Camp
Sub-Freezing
Midweight 250 sleeps warm without overheating in a bag. Merino's odor resistance means multi-night trips stay comfortable between washes.
Complete The System

Pair It With The Bottom

The Men's Classic Thermal Merino Base Layer Bottom matches weight, fit, and fabric so your upper and lower layers regulate as one system — no hot torso, cold legs.

  • Same 250g/m² midweight matched warmth
  • 100% Merino wool identical fabric feel
  • Slim base-layer fit won't bunch under bibs
  • Flatlock seams no chafe under packs
Add A Shell

Top It With A Windshell

For full output in real weather, layer a lightweight windshell or rain jacket over the crew. Merino manages moisture from the inside; the shell blocks wind and precip from the outside.

  • Windshell cuts chill on exposed ridges
  • Rain jacket full weather protection
  • Insulated vest core warmth, free arms
  • Midlayer fleece deep-cold static days

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.


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