
REI Co-op Lightweight Base Layer Half-Zip Top - Women's
Imagine the crisp morning air on a high alpine traverse, demanding gear that works as hard as you do. Designed for a barely-there feel and uninhibited motion, it slips effortlessly under mid-layers, ensuring you stay agile and comfortable without bulk. This essential piece allows you to adapt to changing conditions and truly immerse yourself in the journey.Ā
Ā
PRODUCT CONDITION
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This UnNew REI Co-op Lightweight Base Layer Half-Zip Top - Women's is in Excellent condition.Ā
Ā
Products in Excellent condition have seen minimal use and wear. Any imperfections are purely cosmetic and do not affect the intended performance of the product.Ā Ā
TECH SPECS
- 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
- High neck coverage with a half-zip front lets you open up for venting when you're working hard
- Flatseam construction is comfortable against your skin
- Lower back hem stays tucked when you stretch
- UPF 50+ sun protection
- Fitted
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
- Made in a Fair Trade Certified⢠factory
Original: $18.75
-65%$18.75
$6.56More Images

REI Co-op Lightweight Base Layer Half-Zip Top - Women's
Imagine the crisp morning air on a high alpine traverse, demanding gear that works as hard as you do. Designed for a barely-there feel and uninhibited motion, it slips effortlessly under mid-layers, ensuring you stay agile and comfortable without bulk. This essential piece allows you to adapt to changing conditions and truly immerse yourself in the journey.Ā
Ā
PRODUCT CONDITION
Ā
This UnNew REI Co-op Lightweight Base Layer Half-Zip Top - Women's is in Excellent condition.Ā
Ā
Products in Excellent condition have seen minimal use and wear. Any imperfections are purely cosmetic and do not affect the intended performance of the product.Ā Ā
TECH SPECS
- 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
- High neck coverage with a half-zip front lets you open up for venting when you're working hard
- Flatseam construction is comfortable against your skin
- Lower back hem stays tucked when you stretch
- UPF 50+ sun protection
- Fitted
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
- Made in a Fair Trade Certified⢠factory
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Imagine the crisp morning air on a high alpine traverse, demanding gear that works as hard as you do. Designed for a barely-there feel and uninhibited motion, it slips effortlessly under mid-layers, ensuring you stay agile and comfortable without bulk. This essential piece allows you to adapt to changing conditions and truly immerse yourself in the journey.Ā
Ā
PRODUCT CONDITION
Ā
This UnNew REI Co-op Lightweight Base Layer Half-Zip Top - Women's is in Excellent condition.Ā
Ā
Products in Excellent condition have seen minimal use and wear. Any imperfections are purely cosmetic and do not affect the intended performance of the product.Ā Ā
TECH SPECS
- 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
- High neck coverage with a half-zip front lets you open up for venting when you're working hard
- Flatseam construction is comfortable against your skin
- Lower back hem stays tucked when you stretch
- UPF 50+ sun protection
- Fitted
- REI Co-op brand is certified to The Climate Label; we actively fund efforts to reduce carbon emissions across our business and support climate projects around the world
- Made in a Fair Trade Certified⢠factory























