Smartwool Classic Thermal Merino Base Layer Crew Boxed - Black, Size S

Experience unparalleled comfort and performance with the Smartwool Classic Thermal Merino Base Layer Crew. Crafted from 100% Merino wool with a midweight 250 g/m² fabric, this base layer top is designed for cold weather and all-season layering. The slim fit and crew neck provide a sleek, comfortable silhouette, while flatlock seams reduce chafing. Ideal for outdoor activities, skiing, hiking, or everyday wear, it offers natural odor resistance, moisture-wicking, and temperature regulation to keep you dry and comfortable in varying conditions. The interlock knit construction ensures durability and a soft feel against the skin. With UPF 50+ sun protection and ZQRX certified sustainable merino wool, this top is both functional and eco-friendly.

Advantages

This base layer top excels in moisture management, breathability, and thermal insulation, making it perfect for active use in cold environments. The merino wool naturally resists odors, allowing for extended wear without washing. The flatlock seams enhance comfort by minimizing friction, and the slim fit layers easily under other clothing. Additionally, the fabric is machine washable for easy care.

Suitable for

• Cold weather outdoor activities (skiing, snowboarding, hiking)
• Everyday layering during winter
• Travel and adventure sports
• All-season use as a base layer

Key specifications

• Product Type: Base Layer Top
• Gender: Men's
• Material: 100% Merino Wool
• Fabric Weight: 250 g/m² (Midweight)
• Fit: Slim Fit
• Neckline: Crew Neck
• Sleeve Length: Long Sleeve
• Color: Black
• Size: Small (S)
• Seam Construction: Flatlock Seams
• Key Features: Odor Resistant, Moisture-Wicking, Temperature Regulating, Breathable
• Season: Cold Weather, All-Season Layering
• UPF Rating: UPF 50+
• Fiber Micron: 18.5 Micron
• Fabric Construction: Interlock Knit
• Sustainability: ZQRX Certified Merino Wool
• Care Instructions: Machine Wash Cold, Tumble Dry Low

Recommendations

For optimal performance, layer this base layer under a mid-layer and outer shell in cold conditions. Wash before first use to remove any manufacturing residues. Avoid fabric softeners to maintain moisture-wicking properties.