Description

First half-mile cold; next 3 miles sweaty; lunch break cold. Don't stress—the REI Co-op lightweight half-zip long-sleeve base layer wicks and breathes to keep you comfortable all day.

Features

• Made of a soft polyester blend that wicks sweat and dries fast to keep you warm in winter and cool in summer
• Spandex in the blend gives the fabric 4-way stretch, while underarm gussets ensure you can reach and move with ease
• Flatseam construction is comfortable against your skin
• Lower back hem stays tucked when you stretch
• UPF 50+ sun protection
• Semi-fitted
• Fair Trade Certified™ factories promote safe working conditions and sustainable livelihoods