The Smartwool Men’s Classic All-Season Base Layer Crew is built for adventure in any season. Lightweight Merino wool is wrapped around a recycled nylon core for extra durability while keeping ultra-soft Merino next to skin for comfort. With flatlock seams, offset shoulder and side seams, and a slim fit that moves with you, this versatile base layer is perfect for skiing, camping, or any high-output activity year-round.

Key Features

• Core Spun fabric: durable recycled nylon core with 100% Merino next to skin
• Slim fit follows body contours for easy layering
• Lightweight Merino jersey for year-round comfort and breathability
• Flatlock seams reduce chafing
• Offset shoulder and side seams for comfort under pack straps