Smartwool Classic Merino Thermal Top, Fern Green, Women's Small

Smartwool's Classic Merino Thermal Top in Fern Green redefines cold-weather layering with its 100% ZQ-certified Merino wool interlock knit. Unlike synthetic baselayers that trap moisture and odour, this top naturally regulates temperature, wicks sweat, and resists bacteria—keeping you comfortable from alpine starts to après-ski. The slim fit and flatlock seams eliminate chafing under midlayers, while offset shoulder seams prevent pack strap irritation. At 250 g/m², it offers substantial warmth without bulk, making it the go-to foundation for hiking, skiing, or everyday winter wear.

Highlights

• 100% Merino wool (250 g/m² midweight interlock) for optimal warmth-to-weight ratio
• Naturally moisture-wicking, breathable, and odour-resistant—no synthetic treatments
• Flatlock seams and offset shoulder seams reduce friction and pressure points
• Slim fit with crew neck and long sleeves for easy layering
• ZQ-certified Merino ensures ethical sourcing and fibre quality
• Machine washable for effortless care

In daily use

Pull on the Smartwool Classic Merino Thermal Top and feel the difference: soft, non-itchy wool that moves with you. On a chilly morning hike, it traps heat when you pause and releases it as you climb—no clammy chill. Under a shell, it glides smoothly thanks to flatlock seams, and the offset shoulders keep backpack straps from digging in. After a full day, it still smells fresh, so you can wear it again before washing. From ski slopes to city commutes, this top is a versatile workhorse that keeps you dry and comfortable.

Full specifications

• Brand: Smartwool
• Model: Classic Merino Thermal Top
• MPN: 543994
• EAN: 196575111163
• Gender: Women's
• Size: Small
• Colour: Fern Green
• Material: 100% Merino Wool
• Fabric weight: 250 g/m² (midweight)
• Knit: Interlock
• Fit: Slim
• Neckline: Crew neck
• Sleeve length: Long sleeve
• Seams: Flatlock, offset shoulder
• Thermal regulation: Yes
• Moisture wicking: Yes
• Odour resistance: Natural
• Breathability: High
• Softness: Non-itchy comfort
• Care: Machine wash warm, tumble dry low, do not bleach, iron, or dry clean
• Intended use: Cold weather activities, layering, hiking, skiing, everyday wear
• Sustainability: ZQ-certified Merino wool

Final note

For those who demand natural performance without compromise, the Smartwool Classic Merino Thermal Top delivers enduring comfort, ethical sourcing, and a fit that works as hard as you do—season after season.