MWOBS Summit Hiking Socks – Lightweight Boot

Introducing the Summit Sock – the Official Hiking Sock of the Mount Washington Observatory. Offering supreme warmth and breathability, this sock will keep your feet comfortable in any weather. With superior moisture wicking and temperature regulation, this sock is perfect for your summit adventures.

33% of all Mount Washington Observatory Summit Sock sales sold through Minus33.com supports the Observatory’s work to advance weather and climate research, conduct innovative science education programs, and promote the heritage of the Mount Washington region. 

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

Fabric

• Fiber Content: 68% Merino Wool, 20% Nylon, 11% Stretch Nylon, 1% Spandex
• Total Easy Care: Machine Wash & Dry
• Wool Source: Australia
• Made in New Hampshire, USA!

Features

• Height: 10″ Boot Sock – Almost to mid-calf, this style is designed to be slightly above the standard 10″ boot height.
• Weight: Lightweight
• Cushion: Full Insulation – A full terry covers the inside of the sock giving you total coverage for when things start to chill.  
• 3 Zone Elastic: Elastic on the arch, ankle, and welt opening helps 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: 76 grams (Pair)
• Style #: S56

Uses

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

Care

Washing and Drying Instructions – Learn more about wool care

• 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 about our 5-year New Hampshire-made sock warranty

• 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.