When it comes to Smartwool base layers, you deserve a versatile layer that works as hard and often as you do. The year-round Merino 150 Base Layer Short Sleeve can challenge any climate with Merino's body temperature regulating properties and breathability. This base layer features Core Spun technology which features Merino wrapped around a nylon core for added durability while still keeping the comfort of ultra-soft, responsibly sourced Merino next to the skin. Smartwool also added smooth flatlock seams to minimize chafing and eliminate shoulder and side seams so you and your pack can move easily.

Features

• Slim Fit
• Crew Neckline
• Offset shoulder and side seams are designed to increase comfort and minimize chafing while wearing a backpack
• Side seams wrap to the front for body-enhancing fit
• Flatlock seam construction is designed to minimize chafing
• Garment Weight: 133 g = 4.7 oz
• Select colorways feature plant-based dye technique
• UPF 20