How to Choose Base Layers
REI Co-op Midweight Base Layer Half-Zip Top - Men's Tall Sizes
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Hard-charging winter days start out cold, but you always warm up. The men's REI Co-op Midweight Base Layer half-zip top offers the warmth of long sleeves and the easy venting of a front zipper.
Shop similar products- Smooth outer face lets layers slide on easily, while a brushed interior provides warmth
- High neck coverage with a half-zip front lets you open up for venting when you're working hard
- Fabric wicks moisture and dries quickly to keep you comfortable
- 4-way stretch delivers a flexible range of motion
- Flatseam construction reduces bulk and chafing, and rolled-forward shoulder seams prevent abrasion from pack straps
- UPF 50+ rating protects against sun rays
- 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
Imported.
View all REI Co-op Men's Base Layer Tops| Best Use | Multisport |
|---|---|
| Shirt Type | Partial-zip |
| Fabric | Polyester |
| Sun-Protective Fabric | Yes |
| UPF Rating | 50 |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Underwear Weight | Midweight |
| Sleeve Length | Long Sleeve |
| Gender | Men's |
| Sustainability | Fair Trade Certified™ factory From a Climate Label Certified brand |
REI Co-op Clothing - Men's
| 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 | 32 | 32.5 | 33 | 33.5 | 34 | 34.75 | 35.5 | |||||||||||||||||
| 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. Size chart values represent body measurements, not garment measurements.
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.
Inseam is measured to the floor.
Buying Advice
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Better gear is built together
From feedback to field testing, all of our gear is dialed-in by REI Co-op members. Their adventures informed every stitch and detail—making for better, longer-lasting gear.
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Kodiak
Minneapolis, MN
Stylish & Comfy, but poorly made.
5 years ago
Received this from GF for a Christmas gift. Very stylish, comfortable and fit great. Washed it once and wore it a handful of timed over an Under Armour compression shirt. Started to fray in 6 or 7 different places. Had it less than 3 weeks and returned it. Sad, as it is Very Nice & I Really liked it.
No, I do not recommend this product
TJeepster
Northern Minnesota
Super comfy and toasty warm
4 years ago
I've found my new go to base layer for the oncoming cold season. Has kept me warm without overheating during active periods. The mock neck is great for that chilly draft at the collar and the zip allows you to open the collar and stay cool. I have longer arms and the tall size is terrific.
Height:6'2"
Age:55–64
Weight:150–175 lbs.
Yes , I recommend this product
Maxwell
Definitely love this 1/2 zip
6 years ago
I love this half zip! It is perfect for all my activities - rock climbing, nordic skiing, running, lounging. It works great as a base layer in cold weather, and is cozy on the inside. It fits very well and I wish I had another one as I wear it all the time.
Yes , I recommend this product
Steven M
Smooth
4 years ago
I really like the smooth finish of this half zip, both inside and out. If you are wearing a short sleeve shirt underneath, it feels smooth against your skin, no scratchy feeling. Nice weight, not too thin, not too heavy. Has a bit of a sharkskin finish/shine to it. I’d prefer a more unpolished look, but it’s so comfortable I’ll gladly overlook it.
Height:6'4"
Weight:200–225 lbs.
Yes , I recommend this product
Rich
Base layer
4 years ago
Exactly as advertised. I bought because I have another that I love and wanted more. Especially appreciate the longer sleeves.
Height:5'11"
Weight:150–175 lbs.
Yes , I recommend this product
Michael
Warm top
4 years ago
Very warm top. Wore it under a nylon shell except on really cold days when I wore it under a coat.
Height:6'1"
Yes , I recommend this product
Wes F
3 years ago
Age:45–54
Weight:175–200 lbs.
Height:6'5"
Yes , I recommend this product
Jamil
3 years ago