Very versatile piece
"This is one of my most used base layers. It's quick drying but doesn't get smelly like polyester."
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The Sitka Core Merino 120 LS Crew is an ultralight base layer crafted for early-season hunts.
Ultralight for Hot-Weather Hunts and Active Pursuits
The 120 Series is ultralight to keep you cool and dry through sweltering early-season hunts, as well as help you regulate temperature during active pursuits in variable conditions. The extremely light merino wool-blend fabric naturally resists odor to help you stay undetected, even when used as an outer layer, and it’s engineered for increased durability. This versatility makes it the ideal choice for milder climates or highly mobile hunters.
Early season pursuits call for the Core Merino 120 Long-Sleeve Crew. Our lightest merino baselayer, it features an ultralight merino wool blend that regulates temperature to help you stay comfortable through changing conditions and activity levels, and it naturally resists odor to suppress your scent. Plus, ArmorSpun merino wool gives it the extra durability needed to last for seasons to come.
BEHIND THE DESIGN: ArmorSpun is merino wool, strengthened. By applying science to nature’s best fiber, we were able to create merino wool that meets a higher standard. We found that through intertwining durable nylon with merino wool we could significantly enhance abrasion-resistance while still allowing the merino to deliver its lightweight warmth and natural odor resistance.
WHY WE MADE THIS: Merino wool is a true marvel of natural engineering. A very high warmth-toweight ratio keeps you warm with less bulk, and it’s naturally odor-resistant to help you stay undetected. And unlike traditional wool, its soft, fine fibers won’t itch or irritate. There’s just one problem—it’s not very durable. So, we used science to reinforce merino with nylon to give you the natural benefits of wool in a material that can survive thick brush and rocky ground.
EASE OF CARE: There’s no need to give our ArmorSpun merino wool special treatment. Simply throw it into the washer and dryer with the rest of your regular laundry.
• Lightweight 120-gram, 17.5-micron ArmorSpun Merino Wool for durability and anti-itch comfort
• Easy-care merino wool can be washed and dried with your regular laundry
• Snag-preventative stitching along sleeves resists abrasion from your pack
• Low-profile integrated thumb holes for easy layering
• Total weight: 6.1 oz.
MEN'S
| SIZE | CHEST | SLEEVE |
|---|---|---|
| Small | 36" – 38" | 33" |
| Medium | 39" – 41" | 34" |
| Medium Tall | 39" – 41" | 36" |
| Large | 42" – 45" | 35" |
| Large Tall | 42" – 45" | 37" |
| X-Large | 46" – 49" | 36" |
| X-Large Tall | 46" – 49" | 38" |
| 2XL | 50" – 53" | 37" |
| 2XL Tall | 50" – 53" | 39" |
| 3XL | 54" – 57" | 38" |
| SIZE | WAIST | REG | TALL |
|---|---|---|---|
| 30” | 30” | 31" | – |
| 31” | 31” | 31" | – |
| 32” | 32” | 31" | 33" |
| 33” | 33” | 32" | 34" |
| 34” | 34” | 32" | 34" |
| 35” | 35” | 32" | 34" |
| 36” | 36” | 33" | 34.5" |
| 37” | 37” | 33" | 34.5" |
| 38” | 38” | 33" | 34.5" |
| 40” | 40” | 33" | – |
| 42” | 42” | 33" | – |
| 44” | 44” | 33" | – |
| Small | 28” – 30” | 31" | 33" |
| Medium | 31” – 33” | 31" | 34" |
| Large | 34” – 37” | 32" | 34" |
| X-Large | 38” – 41” | 32" | 34" |
| 2-XL | 42” – 45” | 32" | 34" |
| 3-XL | 46” – 49” | 32" | 34" |
| SIZE | PALM CIRC | LENGTH |
|---|---|---|
| Medium | 8" – 8.5” | 7.5" – 8" |
| Large | 9" – 9.5” | 8.5" – 9" |
| X-Large | 9.5" – 10” | 9" – 9.5" |
| 2XL | 10" – 10.5" | 9.5" – 10" |
| SIZE | CALF CIRC | BOOT SIZE |
|---|---|---|
| M/L | 17.5" | US 6 – 10" |
| L/XL | 18.5” | US 10 – 14" |
HOW TO TAKE MEASUREMENTS

Overall rating: 5.0 / 5 from 1 reviews.
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"This is one of my most used base layers. It's quick drying but doesn't get smelly like polyester."
— Brady (5/5)
We typically fulfill orders by the following business day, though in some cases it may take up to 72 business hours. Orders are shipped via UPS and USPS.
Please note that shipping times shown at checkout are estimates only, and delays can occur once a package is in transit. If you require a guaranteed delivery date, be sure to select a shipping option that includes a stated timeframe (e.g., Next Day Air or 2nd Day Air).
For any special shipping preference requests, please contact us at info@gearfool.com or call (435) 263-0207 prior to placing your order.
We do not ship internationally at this time.
See our full shipping and return policy here.
We offer a “30-Day Money Back Guarantee" for any product that (1) aligns with this Return & Exchange Policy and (2) wasn't already discontinued at the time of purchase. You have 30 days from the date of purchase to return a product for a full refund or exchange, granted the product aligns with this Return & Exchange Policy. Returned product must still be in a new and resellable condition, free of any damage or defect.
See our full return and exchange policy or start a return/exchange here.