Men's Wool Thermal Top Midweight Base Layer - 100% Merino Wool

Reliable Warmth for Every Season: Men’s Midweight Merino Wool Base Layer Top

Built for changing conditions and year-round adventure, the Minus33 Chocorua Midweight Wool Crew delivers the warmth, breathability, and comfort that serious outdoor layering demands. Designed from 100% merino wool, this versatile base layer performs equally well on cold mountain mornings, active trail days, and everyday wear when temperatures begin to drop.

Thoughtful Design & Materials

100% Merino Wool Construction: Made from premium 18.5 micron merino wool for an exceptionally soft feel that naturally regulates temperature, manages moisture, and helps resist odor during extended wear.

Midweight Interlock Knit: The 245 g/m² knit provides a balanced combination of warmth, breathability, and flexibility—ideal for layering in colder weather or wearing on its own in milder conditions.

Certified Responsible Materials:

• OEKO-TEX® STANDARD 100 Certified

• Woolmark® Certified

• Responsible Wool Standard® (RWS) Certified

Comfort-Focused Design: Tagless labeling and flatlock seam construction help reduce irritation and prevent chafing during active use.

Performance You Can Rely On

Temperature Regulation: Merino wool naturally adapts to changing conditions, helping keep you warm in cold weather while remaining breathable during high-output activity.

Moisture & Odor Management: Naturally wicks moisture away from the skin and helps minimize odor buildup for longer-lasting comfort between washes.

Versatile Layering System: Functions effectively as both a base layer and lightweight mid-layer depending on weather conditions and activity level.

UPF 50+ Protection: Provides additional sun protection during extended outdoor exposure.

Built for Outdoor Adventure & Everyday Wear

Regular Fit Profile: Offers enough room for movement and layering without feeling bulky or oversized.

Easy Care Convenience: Machine washable and dryer-safe for simple maintenance after repeated outdoor use.

Designed for Year-Round Use: Performs exceptionally well across hiking, skiing, camping, hunting, travel, and everyday cold-weather wear.

Product Details

• Material: 100% Merino Wool

• Knit Weight: 245 g/m² Midweight Interlock Knit

• Fiber Size: 18.5 Micron

• UPF Rating: 50+

• Fit: Regular fit

• Neckline: Crew neck

• Construction Features:

  • Flatlock seams

  • Tagless label

  • Moisture-managing merino wool

• Weight:

  • Size Large: 9.6 oz / 272 g

• Style #: 705

Recommended Use

• Ideal Seasons:

  • Spring

  • Fall

  • Winter

• Activities:

  • Hiking

  • Camping

  • Running

  • Skiing & Snowboarding

  • Hunting & Fishing

  • Everyday Wear

  • Cold-weather layering

Temperature Guidance

• Active Use: 30°F to 0°F

• Inactive Use: 30°F to 60°F

Care Instructions

• Machine wash cold on gentle cycle

• Use mild or wool-specific detergent

• Tumble dry low

• Avoid bleach and fabric softeners

• Store in airtight container for long-term storage

Built for the Conditions Ahead

The Chocorua Midweight Merino Wool Crew is designed for those who stay outside regardless of the forecast. Comfortable, breathable, and built to perform across changing conditions, it delivers dependable warmth and versatility for every season of adventure.