Pure merino construction
The 200 g/m² midweight knit uses 100% merino wool for a broad four-season range.
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Coreline AR Merino 200 Baselayer Top
In the field
A 100% merino wool long-sleeve baselayer with a 200 g/m² midweight knit for four-season layering.
Comfort under layers
Flatlock seams, a tagless interior, and a low-bulk athletic fit reduce distractions under packs and shells.
Mixed-output use
Natural thermoregulation, moisture wicking, and odor resistance support hiking, hunting, backpacking, travel, and cold-weather layering.
Construction and materials
- Material
- 100% merino wool
- Fabric weight
- 200 g/m², midweight
- Fit
- Next-to-skin athletic fit
- Seams
- Flatlock
- Interior
- Tagless
- Sleeves
- Long
- Fabric features
- Breathable, moisture-wicking, odor-resistant and temperature-regulating
- Color options
- Black, Navy, Blue
- Size options
- S, M, L, XL, 2XL
- Size chart scope
- Reference body chart XS–4XL; only selector choices are purchase options.Body measurements, not garment dimensions; sleeve measured from center back of neck to wrist
- Chart fit advice
- Between sizes, size up for a relaxed fit
This is your next-to-skin workhorse. Pure merino. Zero blends. Built to regulate heat when you’re moving and hold warmth when you stop. From cold starts to long miles, it stays dry, stays quiet, and doesn’t stink out camp.
Key Features
-
100% Merino Wool (200 g/m²): Midweight knit for four-season range
-
Natural Thermoregulation: Warm in cold, cool when you push
-
Odor Resistance: Wear it longer. Smell less.
-
Moisture Wicking: Pulls sweat off skin before it chills you
-
Flatlock Seams: No rub. No hot spots under packs or shells
-
Next-to-Skin Athletic Fit: Low bulk for clean layering
-
Tagless Interior: Nothing scratching, nothing catching
Recommended Use
Built for mixed-output days where conditions swing and effort changes fast. Start cold at dawn, grind uphill, cool down on the ridge. Ideal for hiking, hunting, backpacking, travel, and everyday layering in cold weather.
Bottom Line
Pure merino. Midweight muscle. Zero excuses.
Men's Tops — Size Chart (XS–4XL)
Measurements reflect body measures, not garment dimensions. If between sizes, size up for a relaxed fit.
| Size | Chest (in) | Chest (cm) | Waist (in) | Waist (cm) | Sleeve* (in) | Sleeve* (cm) |
|---|---|---|---|---|---|---|
| XS | 32–34 | 81–86 | 26–28 | 66–71 | 31–32 | 79–81 |
| S | 35–37 | 89–94 | 29–31 | 74–79 | 32–33 | 81–84 |
| M | 38–40 | 97–102 | 32–34 | 81–86 | 33–34 | 84–86 |
| L | 41–43 | 104–109 | 35–37 | 89–94 | 34–35 | 86–89 |
| XL | 44–46 | 112–117 | 38–40 | 97–102 | 35–36 | 89–91 |
| 2XL | 47–49 | 119–124 | 41–43 | 104–109 | 36–37 | 91–94 |
| 3XL | 50–53 | 127–135 | 44–47 | 112–119 | 37–38 | 94–97 |
| 4XL | 54–57 | 137–145 | 48–51 | 122–130 | 38–39 | 97–99 |
*Sleeve measured from center back of neck to wrist. 1 inch = 2.54 cm.
Recommended for You
FAQ
How can I reach Alpine Extreme if I have questions?
Email [email protected] or use our contact form.
Do you offer free shipping?
Free standard shipping is available to most addresses worldwide. Availability, delivery estimates, and any expedited charges depend on the destination and order. International duties, tariffs, and customs fees remain the customer’s responsibility. See our Shipping Policy for details.
What's the return policy at Alpine Extreme?
Eligible return or exchange requests must be submitted within 45 days of the order date. Items must be new and unused with original packaging, tags, and accessories. General change-of-mind returns are not accepted. Return-shipping responsibility depends on the reason for the return. See the full Return & Refund Policy for exclusions and refund timing.
How long will it take for my order to arrive?
Orders are typically processed within 2–5 business days. Most standard shipments arrive within 7–14 business days after shipping, depending on destination and carrier conditions. Delivery estimates are not guaranteed.
Can I track my order?
Yes. Tracking details are emailed after shipment. You can also check order status with your order information through our order-tracking page.
What if there's an issue with my order?
Email [email protected] or submit the form on our support page. Report delivery issues within 60 days of the order date so carrier information is still available.
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