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The Sitka Core Merino 220 Half-Zip offers midweight warmth, odor resistance, and durability for active hunts in cool-to-cold conditions.
Versatile Warmth for Cool-to-Cold Conditions
We made the 220 Series to be an essential piece in just about every hunter’s kit. The double-layer merino-blend fabric helps it stay in your system as you go from mild fall hunts to cold late-season conditions. Merino wool also naturally resists odor and regulates temperature, and ours is reinforced for added durability. This makes it a particularly great choice for whitetail and waterfowl hunters who mostly hunt in cool-to-cold weather.
When the fall chill starts to settle in, it’s time to reach for the Core Merino 220 Half-Zip. Featuring a midweight, double-layer merino wool blend, it regulates temperature to keep you comfortable from mild early-fall afternoons through late-season cold snaps. Merino wool is also naturally odor-resistant to help maintain stealth, and our ArmorSpun merino wool is reinforced with nylon to make sure it stands the test of time.
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 its 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 220-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
• Zippered chest pocket safely stores your valuables
• Low-profile integrated thumb holes for easy layering
• Total weight: 11.1 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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"My son loved his shirt!"
— Kaylyn B. (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.