REI Co-op Lightweight Base Layer Half-Zip Top - Men's
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.
- 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
Imported.
View all REI Co-op Men's Base Layer TopsBest Use Multisport
Shirt Type Partial-zip
Fabric 92% polyester/8% spandex
Sun-Protective Fabric Yes
UPF Rating 50
Moisture Wicking Yes
Quick Drying Yes
Underwear Weight Lightweight
Sleeve Length Long Sleeve
Gender Men's
Sustainability Fair Trade Certified™ factory
XS S M L XL XXL XXXL 24 IN Waist 26 IN Waist 28 IN Waist 30 IN Waist 31 IN Waist 32 IN Waist 33 IN Waist 34 IN Waist 35 IN Waist 36 IN Waist 38 IN Waist 40 IN Waist 42 IN Waist 44 IN Waist 46 IN Waist 48 IN Waist 50 IN Waist Chest 35 36 - 38 39 - 41 42 - 45 46 - 49 50 - 53 54 - 57 Sleeve Length 33 33.5 34 34.5 35 35.75 36.5 Waist 27.5 28 - 30 32 - 34 36 - 38 40 - 42 44 - 46 48 - 50 24 26 28 30 31 32 33 34 35 36 38 40 42 44 46 48 50 Hip 33.5 34.5 - 36.5 37.5 - 39.5 41 - 43 44 - 46.5 47.5 - 50.5 51.5 - 54.5 32 33.5 34.5 36.5 37 37.5 38.5 39.5 40.25 41 43 44 46.5 47.5 50.5 52.5 54.5 Inseam 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 32 Sizing Notes
Measurements are stated in inches unless otherwise indicated.
SHORT: Some pants are available in short sizes, which generally means an inseam that is 2.5 inches shorter than regular sizes.
TALL: Some pants, shirts, jackets and parkas are available in tall sizes, which generally means an inseam that is 3 inches longer and a rise that is 1 inch longer, a shirt or jacket body that is 2 inches longer, a parka body that is 2.5 inches longer and sleeves that are 2.5 inches longer than regular sizes.
Capri or cropped pants have an intentionally shorter inseam—reference the technical specs instead of this chart.Loading Reviews... Loading Questions...