Step into adventure with the Minus33 Microweight Cushion Mini Crew Hiking Sock, created in partnership with the Appalachian Mountain Club (AMC), the oldest outdoor conservation and recreation nonprofit in the U.S. Whether you’re hiking a rugged mountain pass, chasing miles on the trail, or just strolling around town, these socks are built to keep your feet happy mile after mile.

Crafted from ultra-soft merino wool, the Microweight Mini Crew Hiker balances breathability with just the right touch of cushion. That means your feet stay cool when it’s hot, warm when it’s chilly, and dry no matter what nature throws at you. The low-profile height makes them perfect for trail runners, hikers, and anyone who wants lightweight comfort without sacrificing performance.

And here’s the best part:  33% of all AMC socks sold go to the Appalachian Mountain Club’s mission to protect the outdoors and encourage adventure. So when you lace up and pull these on, you’re not just gearing up for the journey—you’re helping to preserve the trails and wild places we all love. 

Learn more & become an AMC member or partner.

Please Note: This sock helps support one of our non-profit partners therefore discounts cannot be applied towards it.

Fabric

• Fiber Content: 59% Merino Wool, 27% Nylon, 13% Stretch Nylon, 1% Spandex
• Total Easy Care: Machine Wash & Dry
• Wool Source: Australia
• Made in New Hampshire, USA!

Features

• Height: Mini Crew - Sits a couple of inches above the ankle at the bottom of the calf.
• Weight: Microweight
• Cushion: Full Cushion along the bottom of the sock wicks away maximum moisture keeping your feet cool and dry. 
• Y-Heel: Y-heel style helps create a perfect pocket for your heel, for a no-slip fit.
• 3 Zone Elastic: Elastic on the arch, ankle, and welt opening help keep your sock in place throughout the day
• Vented Zones: Venting on the top of the sock lets your feet air out and stay cool
• Heel/Toe Plating: Extra durability on the heel and toe keeps socks long-lasting
• Seamless Toe: Smooth, comfortable finish on the toe
• Wool/Nylon Yarn: Our Mountain Heritage sock collection uses wool/nylon yarn technology, which creates a durable sock with high wool content.
• Weight:  51 grams (Pair)
• Style #: S34

Uses

• Ideal Seasons: Spring, Summer, Fall, Winter
• Activities: Everyday Wear, Hiking, Camping, Biking, Fishing

Care

Washing and Drying Instructions - Learn More

• Machine Wash Cold: Gentle cycle with like colors
  
• Detergent: Mild or wool-specific
• Tumble Dry: Low heat
• Storage: Place in an airtight container when not in use for long periods of time
• Do NOT Use: Fabric softener or bleach!

Guarantee / Warranty

• 30 Day Satisfaction Guarantee - Return Policy

• 5 Year Manufacturers Warranty - Learn More

• Excellent Quality - Customer Service

Benefits of Merino Wool

Moisture Wicking
Merino wool is the best fiber to regulate moisture. It does this by absorbing sweat from your skin and releasing it into the air. Whether you're hiking, running, biking, on the job, or just relaxing at home, our wool helps keep you dry and comfortable all day long.

Soft & Comfortable
Merino wool fibers are much finer than traditional wool, creating a luxuriously soft feel that won’t itch or irritate your skin. Comfortable enough for everyday wear and gentle enough for sensitive skin, it’s a natural choice for underwear, base layers and next-to-skin comfort.

Highly Breathable
Merino wool’s unique structure allows air to circulate freely, helping to regulate your body temperature in both hot and cold weather conditions. Whether you're layering up for winter or staying cool in summer, Merino keeps you comfortable by letting your skin breathe.

Anti-Microbial
Merino wool naturally resists odor-causing bacteria, keeping you fresher for longer. No lingering smells, even after extended wear. Perfect for travel, outdoor adventures, and everyday life.

Insulates When Wet
Merino wool can hold up to 30% of its weight in moisture without feeling wet or clammy against the skin. Unlike cotton or synthetic fabrics, it keeps insulating when damp, making it a smart choice for unpredictable weather and high-output activity.

Fire Resistant
Merino wool is naturally fire-resistant and self-extinguishing. It will not melt or stick to your skin like synthetic fabrics. A trusted option for first responders, campfire safety, or any high-heat environment.

UV Protection
Our Merino wool clothing helps protect you from the sun’s harmful rays, with different levels of UPF based on fabric weight:

• Microweight (145 GSM): UPF 20

• Lightweight (170 GSM): UPF 25

• Midweight (245 GSM): UPF 50+

• Heavyweight (400 GSM): UPF 50+
  

These natural UV-blocking properties make Merino wool ideal for long days or the beach or above treeline.

Renewable and Sustainable
Merino wool is a natural, biodegradable fiber with a low environmental footprint. Grown by Australian Merino sheep and shorn seasonally, it is a renewable material that supports responsible farming practices.