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  • A man wearing a black 100 percent merino wool t shirt shown from the waist up against a solid white background.
  • A bearded man wearing a beanie and sunglasses and a charcoal gray 100 percent merino wool t shirt holding a water bottle in an open grassland.
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  • A man wearing an olive drab green 100 percent merino wool t shirt standing next to a woman holding a puppy outdoors on a farm.
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  • A man wearing a black 100 percent merino wool t shirt shown at a three-quarter angle against a solid white background.
  • A bearded man wearing a forest green 100 percent merino wool t shirt resting on a boulder with a water bottle outdoors.
  • A man wearing a black 100 percent merino wool t shirt shown from the waist up against a solid white background.
  • A bearded man wearing a beanie and sunglasses and a charcoal gray 100 percent merino wool t shirt holding a water bottle in an open grassland.
  • A man wearing a charcoal gray 100 percent merino wool t shirt paddling a canoe on a lake from behind.
  • A man wearing an olive drab green 100 percent merino wool t shirt standing next to a woman holding a puppy outdoors on a farm.
  • A man wearing a black 100 percent merino wool t shirt shown from the side against a solid white background.
  • A man wearing a black 100 percent merino wool t shirt shown from the back against a solid white background.
  • A man wearing a black 100 percent merino wool t shirt shown at a three-quarter angle against a solid white background.
  • A bearded man wearing a forest green 100 percent merino wool t shirt resting on a boulder with a water bottle outdoors.
100% Merino Wool T-Shirt - Men's Lightweight Crew

100% Merino Wool T-Shirt - Men's Lightweight Crew

$69.99
Color
Size

Crafted from 100% Australian Merino wool, this men's T-shirt is naturally soft, anti-odor, and versatile. Wears effortlessly as a next-to-skin base layer or standalone everyday top.

Description

The Minus33 Algonquin Men’s Lightweight Wool Crew is a 100% merino wool T-shirt crafted from ultra-fine 17.5-micron Merino wool in a lightweight 170 GSM jersey knit. It delivers year-round comfort and natural moisture regulation and breathability.

Materials

  • Fiber Content: 100% Merino Wool
  • Fabric Weight: 170 GSM Lightweight
  • Knit Type: Jersey Knit
  • Fiber Fineness: 17.5 Micron Fibers
  • Sun Protection: UPF 25
  • Certifications: OEKO-TEX Standard 100, Woolmark, Responsible Wool Standard (RWS)
  • Care Rating: Total Easy Care (Machine Wash & Dry)

Construction & Fit

  • Total Garment Weight: 6.6 oz / 186g (Size Large)
  • Fit Type: Regular fit — standard cut with room to breathe (runs true to size; size down for an athletic fit)
  • Layering: Base Layer
  • Neckline: Crew Neck
  • Stitching: Flatlock seams to prevent chafing
  • Label: Tagless design (no itchy neck tags)
  • Model Reference: Model in tan is 5'10" / 150 lbs wearing a size Medium

Origin & Sourcing

  • Wool Source: 100% Australian Merino Wool
  • Ethical Standards: Responsible Wool Standard (RWS) certified animal welfare and land management

Recommended Uses

  • Ideal Seasons: Spring, Summer, Fall, Winter
  • Activities: Everyday Wear, Hiking, Camping, Biking, Running, Fishing, Hunting, Snowsports
  • Temperature Range: 30°F to 60°F+ (Active) | 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.

Benefits of Merino Wool

  • Moisture Wicking: Absorbs vapor directly from skin and releases it outward to keep you dry and comfortable.
  • Soft & Comfortable: Ultra-fine 17.5-micron fibers eliminate itch and provide irritation-free, next-to-skin comfort.
  • Highly Breathable: Natural fiber structure circulates air freely to regulate body temperature across warm and cool weather.
  • Naturally Anti-Microbial: Inhibits odor-causing bacteria so garments stay fresh over extended wear and multi-day travel.
  • Insulates When Wet: Holds up to 30% of its weight in moisture without feeling clammy or losing thermal efficiency.
  • Naturally Fire Resistant: Self-extinguishing and will not melt or stick to skin when exposed to sparks or heat.
  • UV Protection: Inherent UPF 25 sun rating protects against prolonged outdoor UV exposure.
  • Renewable & Biodegradable: 100% natural, low-impact fiber grown seasonally with sustainable farming practices.

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.

Product Story

Algonquin [al-gong-kin, -kwin]: Algonquin Peak is the second tallest and most challenging summit of the Adirondack High Peaks, historically marking the boundary between the Algonquian and Iroquois peoples. Its bare summit rewards climbers with 360-degree panoramic views across the wilderness.

Why No Polyester

Your Algonquin Crew is crafted from 100% natural Merino wool and contains zero synthetic poly blends. 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.

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