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100% Merino Wool Base Layer - Men's Midweight Thermal Top
$89.99
The ultimate choice in 100% Merino wool base layers, this midweight wool crew offers warmth, breathability and comfort.
Description
The Minus33 Chocorua Men’s Midweight Wool Crew is a 100% merino wool base layer top for men. Wear it as a primary base layer in cold temperatures or standalone when the temperature rises.
Materials
- Fiber Content: 100% Merino Wool
- Fabric Weight: 245 GSM Midweight
- Knit Type: Interlock Knit
- Fiber Fineness: 18.5 Micron Fibers
- Sun Protection: UPF 50+
- Certifications: OEKO-TEX® Standard 100, Woolmark®, Responsible Wool Standard® (RWS)
- Care Rating: Total Easy Care (Machine Wash & Dry)
Construction & Fit
- Total Garment Weight: 9.6 oz / 272g (size Large)
- Fit Type: Regular fit — standard cut with room to breathe without being baggy (runs true to size)
- Layering: Base Layer or Mid Layer
- Neckline: Crew Neck
- Stitching: Flatlock seams to prevent chafing
- Label: Tagless design (no itchy neck tags)
Origin & Sourcing
- Wool Source: 100% Australian Merino Wool
- Manufacturing: Imported
- Ethical Standards: Responsible Wool Standard (RWS) certified animal welfare and land management
Recommended Uses
- Ideal Seasons: Spring, Fall, Winter
- Activities: Everyday Wear, Hiking, Camping, Biking, Running, Fishing, Hunting, Skiing, Snowboarding, Ice Fishing
- Temperature Range: 0°F to 30°F (Active) | 30°F to 60°F (Inactive)
Size Guide
Measurements refer to body size, not garment dimensions. All measurements are in inches.
| Size | Chest | Waist | Sleeve Length | Shirt Length | Inseam |
|---|---|---|---|---|---|
| XS | 33–35" | 24–27" | 30–31" | 25.5–26.5" | 25–27" |
| S | 35–38" | 28–30" | 31–32" | 26.5–27.5" | 28–30" |
| M | 39–41" | 31–33" | 32–33" | 27.5–28.5" | 29–32" |
| L | 42–45" | 34–36" | 33–34" | 28.5–29.5" | 32–34" |
| XL | 46–48" | 37–40" | 34–35" | 29.5–30.5" | 32–35" |
| XXL | 49–52" | 41–44" | 35–36" | 30.5–31.5" | 34–35" |
| XXXL | 52–54" | 45–49" | 36–37" | 31.5–32.5" | 34–36" |
Care Guide: Turn inside out before washing. Machine wash cold on a gentle cycle with like colors using mild or wool-specific detergent. Tumble dry low heat. Do NOT use fabric softener or bleach. For seasonal storage, place in an airtight container.
Product Story
Chocorua [shoh-kor-oh-wah]: Mt. Chocorua is the easternmost peak in the Sandwich Mountain Range of New Hampshire's White Mountains. At 3,490 feet, its identifiable bare summit offers unobstructed panoramic views in all directions.
About Minus33
Rooted in over a century of New Hampshire woolen heritage, Minus33 designs performance-driven Merino wool apparel built for the elements. Born and tested in the rugged White Mountains, the brand focuses on natural fiber performance, thermal comfort, and durable construction for demanding outdoor pursuits.
Why No Polyester
Your Chocorua Crew is crafted from 100% natural Merino wool and contains zero synthetic poly blends, which means no microplastics. Here's why that matters to your health.
Shipping & Returns Policy
Free Shipping: Shipping is free on all orders.
Return Policy: ShirtCastle Originals: Because each ShirtCastle Original is made to order, we're unable to accept returns or exchanges. Please review product details carefully before ordering.
For partner-brand products, contact us at aaron@shirtcastle.com to request a return.
Damages & Defects: In the rare event of a manufacturing error, we will replace your item for free—you do not need to ship the original back. To report an issue, email aaron@shirtcastle.com within 30 days of delivery and attach a clear photo of the defect. We will reply via email and process your replacement.