loaded 509 results

Long Sleeve Men's Tops

(509 products)

Products (509)

Sort: Best Match

Arc'teryxEmblem Fleece Crew - Men's
$110.00
18 reviews with an average rating of 4.1 out of 5 stars
ColumbiaFlare Gun Heavyweight Flannel Shirt - Men's
$80.00
3 reviews with an average rating of 4.3 out of 5 stars
VISSLASolid Sets Eco Po Hoodie - Men's
$56.73
Save 24%
compared to $74.95
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
2 reviews with an average rating of 3.0 out of 5 stars
REI OUTLET
Top Rated
NRSBaja Sun Shirt - Men's
$39.83
Save 50%
compared to $79.95
7 reviews with an average rating of 4.9 out of 5 stars
Top Rated
Icebreaker200 Oasis Long-Sleeve Half-Zip Base Layer Top - Men's
$115.00
34 reviews with an average rating of 4.7 out of 5 stars
Royal RobbinsLieback Organic Cotton Flannel Shirt - Men's
$71.73 - $74.73
Save 24% - 25%
compared to $95.00 - $100.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
7 reviews with an average rating of 4.3 out of 5 stars
REI OUTLET
Ortovox185 Rock'N'Wool Zip Neck Base Layer Top - Men's
$130.00
0 reviews
Top Rated
Mountain HardwearCrater Lake Half-Zip Top - Men's
$55.73
Save 25%
compared to $75.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
15 reviews with an average rating of 4.6 out of 5 stars
REI OUTLET
Helly HansenTyri Hoodie - Men's
$64.73
Save 28%
compared to $90.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
0 reviews
REI OUTLET
KUHLReactiv Lite Grid Long-Sleeve Crew Base Layer Top - Men's
$109.00
8 reviews with an average rating of 4.3 out of 5 stars
PatagoniaLong-Sleeve Dirt Craft Bike Jersey - Men's
$99.00
0 reviews
Top Rated
Mountain HardwearAirMesh Long-Sleeve Hoody - Men's
$99.00
47 reviews with an average rating of 4.7 out of 5 stars
MarmotLanigan Flannel Chore Coat - Men's
$102.73
Save 31%
compared to $150.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
19 reviews with an average rating of 4.2 out of 5 stars
REI OUTLET
ColumbiaHelvetia II Printed Half-Snap Fleece Pullover - Men's
$90.00
25 reviews with an average rating of 4.5 out of 5 stars
rabbitLayer One Zip Shirt - Men's
$70.00
1 reviews with an average rating of 5.0 out of 5 stars
New arrival
prAnaTouchstone Henley Shirt - Men's
$56.73
Save 27%
compared to $78.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
0 reviews
REI OUTLET
Top Rated
MarmotFairfax Novelty Lightweight Flannel Shirt - Men's
$58.73 - $59.73
Save 25% - 26%
compared to $80.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
25 reviews with an average rating of 4.5 out of 5 stars
REI OUTLET
Top Rated
PYNRSSydney Performance Hoodie
$150.00
15 reviews with an average rating of 5.0 out of 5 stars
VISSLAGo-To Long-Sleeve Shirt - Men's
$58.73
Save 26%
compared to $79.50
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
0 reviews
REI OUTLET
Arc'teryxRho Merino Wool Zip-Neck Base Layer Top - Men's
$140.00
12 reviews with an average rating of 4.3 out of 5 stars
Helly HansenLokka Flannel Long-Sleeve Shirt - Men's
$69.73
Save 30%
compared to $100.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
0 reviews
REI OUTLET
Top Rated
Black DiamondAlpenglow Pro Hoody - Men's
$149.00
192 reviews with an average rating of 4.6 out of 5 stars
NikeStride Waffle Crew Shirt - Men's
$55.93
Save 30%
compared to $80.00
0 reviews
IcebreakerMerino 260 ZoneKnit Long-Sleeve Half-Zip Base Layer Top - Men's
$185.00
1 reviews with an average rating of 5.0 out of 5 stars
Helly HansenAker Flannel Long-Sleeve Shirt - Men's
$64.73
Save 28%
compared to $90.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
0 reviews
REI OUTLET
StioMiter Stretch Lightweight Flannel - Men's
$99.00
21 reviews with an average rating of 4.2 out of 5 stars
Top Rated
tasc PerformanceCarrollton Long-Sleeve Fitness T-Shirt - Men's
$54.00
24 reviews with an average rating of 4.5 out of 5 stars
SaxxRoast Master Midweight Long-Sleeve Crew Base Layer Top - Men's
$47.73
Save 36%
compared to $75.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
0 reviews
REI OUTLET
Helly HansenLillo Snap Sweater - Men's
$82.73
Save 31%
compared to $120.00
Members use code OUTJAN26 for $20 off when you spend $100+ at REI Outlet.
0 reviews
REI OUTLET
Top Rated
BrooksNotch Thermal Long-Sleeve 3.0 - Men's
$90.00
9 reviews with an average rating of 5.0 out of 5 stars

301–330 of 509 products

Sort: Best Match

Related Expert Advice articles

What material is best?

Wool is moisture-wicking and odor-resistant, while synthetic fabrics are more durable and less expensive.

Match the temp to the trek

Lightweight layers are best for moderate to cool temperatures. Midweight layers are best for cold temperatures. Heavyweight layers are best for below-freezing temperatures.

Find your fit

To be able to wick sweat efficiently, your next-to-skin layer needs to actually be next to your skin. A comfortably snug fit everywhere is your goal.

Read full article: How to Choose Base Layers

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