+1-800-504-5897 Live Chat Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's , Black, Iron Heather Includes Blazin' Deal w/ Free S&H — 11 models

00:10
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, Extra Large, SW016952D361-XL
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, Large, SW0169520011-001 BLACK-L
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, 2XL, SW0169520011XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, 2XL, SW016952D361XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, 2XL, SW0169520011XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, 2XL, SW016952D361XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, 2XL, SW0169520011XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, 2XL, SW016952D361XXL000
1 of 1 videos
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, Extra Large, SW016952D361-XL
1 of 8 images
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, Extra Large, SW016952D361-XL
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, Large, SW0169520011-001 BLACK-L
2 of 8 images
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, Large, SW0169520011-001 BLACK-L
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, 2XL, SW0169520011XXL000
3 of 8 images
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, 2XL, SW0169520011XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, 2XL, SW016952D361XXL000
4 of 8 images
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, 2XL, SW016952D361XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, 2XL, SW0169520011XXL000
5 of 8 images
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, 2XL, SW0169520011XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, 2XL, SW016952D361XXL000
6 of 8 images
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, 2XL, SW016952D361XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, 2XL, SW0169520011XXL000
7 of 8 images
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Black, 2XL, SW0169520011XXL000
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, 2XL, SW016952D361XXL000
8 of 8 images
Smartwool Classic All-Season Merino Base Layer Long Sleeve - Mens, Iron Heather, 2XL, SW016952D361XXL000

Tap Tap to Zoom

Questions & Answers
Customer Reviews
Most Recent Reviews
Smartwool for moisture management by Tigger, Verified Owner, December 16, 2025
I purchased this for a base layer shirt for cycling. 5'10 192lbs athletic build. This shirt is light weight and on the thinner. Surprisingly it was loose fitting,it still performed as needed just a little looser than expected. I only purchase we ool ...
Read More...
Read 1 Review
Blazin' Deal
On Sale

We've got an AWESOME deal for you!

See more Blazin' Deal items
Blazin' Deal
Prices have been cut drastically on select models of this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts - sorry about that. This offer won't last long, so don't miss out!
In Stock
11 Models Available
Size Chart

Show with deals only:

Blazin' Deal
On Sale
Color
All
Condition
All
Men's Clothing Size
All
Condition Details
All
Condition Quality
All
Search

Product Info for Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's

Spring skiing or summer camping? The year-round Men's Classic All-Season Merino Base Layer Long Sleeve is game for either. With the Core Spun technology, they've wrapped lightweight Merino around a nylon core for added durability, while still keeping the comfort of ultra-soft, responsibly-sourced Merino next to skin. They added smooth flatlock seams to help minimize chafing and offset shoulder and side seams to lie smoothly beneath pack straps. No matter the season or the activity, this base layer is made for it.image

Specifications for Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's:

Manufacturer: Smartwool
Body Length: Regular
Length, Alpha: Regular
Sleeve Length: Long
Age Group: Adults
Apparel Fit: Slim
Gender: Male
Fabric/Material: 88% Merino Wool/12% Nylon
Fire Resistant: No
Sleeve Type: Long Sleeve
Tactical: No
Reflective/High Visible: No

Features of Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's

  • Slim fit is intended to follow the contours of the body
  • Lightweight Merino jersey fabric uses a recycled nylon core to increase durability while still keeping 100% Merino wool next to skin
  • Flatlock seam construction and offset shoulder and side seams designed to increase comfort and minimize chafing
  • Side seams wrap to front for body-enhancing fit

Package Contents:

  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's

Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's Orderable Models

List of Orderable Models

  • Open Box, Dealer Demo, Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Black, 2XL, SW0169520011XXL000 , MPN: SW0169520011XXL000-DMO , Code: STW-AT1-RSRS50-SW0169520011XXL000-DMO-OB-A
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Black, Small, SW0169520011-001 BLACK-S , MPN: SW0169520011-(001) BLACK-S , UPC: 196247539646 , Code: STW-AT1-RSRS50-SW0169520011-001-BLACK-S
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Black, Medium, SW0169520011-001 BLACK-M , MPN: SW0169520011-(001) BLACK-M , UPC: 196247539745 , Code: STW-AT1-RSRS50-SW0169520011-001-BLACK-M
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Black, Large, SW0169520011-001 BLACK-L , MPN: SW0169520011-(001) BLACK-L , UPC: 196247539837 , Code: STW-AT1-RSRS50-SW0169520011-001-BLACK-L
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Black, Extra Large, SW0169520011-001 BLACK-XL , MPN: SW0169520011-(001) BLACK-XL , UPC: 196247539936 , Code: STW-AT1-RSRS50-SW0169520011-001-BLACK-XL
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Black, 2XL, SW0169520011XXL000 , MPN: SW0169520011XXL000 , UPC: 196247540031 , Code: STW-AT1-RSRS50-SW0169520011XXL000
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Iron Heather, Small, SW016952D361-S , MPN: SW016952D361-(D36) IRON HEATHER-S , UPC: 196247539677 , Code: STW-AT1-RSRS50-SW016952D361-S
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Iron Heather, Medium, SW016952D361-M , MPN: SW016952D361-(D36) IRON HEATHER-M , UPC: 196247539769 , Code: STW-AT1-RSRS50-SW016952D361-M
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Iron Heather, Large, SW016952D361-L , MPN: SW016952D361-(D36) IRON HEATHER-L , UPC: 196247539875 , Code: STW-AT1-RSRS50-SW016952D361-L
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Iron Heather, Extra Large, SW016952D361-XL , MPN: SW016952D361-(D36) IRON HEATHER-XL , UPC: 196247539974 , Code: STW-AT1-RSRS50-SW016952D361-XL
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Iron Heather, 2XL, SW016952D361XXL000 , MPN: SW016952D361XXL000 , UPC: 196247540079 , Code: STW-AT1-RSRS50-SW016952D361XXL000

Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's Unavailable & Discontinued Models

List of Unorderable Models

  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Natural, Small, SW0169521001-S , MPN: SW0169521001-(100) NATURAL-S , UPC: 196247540154 , Code: STW-AT1-RSRS50-SW0169521001-S
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Natural, Medium, SW0169521001-M , MPN: SW0169521001-(100) NATURAL-M , UPC: 196247540239 , Code: STW-AT1-RSRS50-SW0169521001-M
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Natural, Large, SW0169521001-L , MPN: SW0169521001-(100) NATURAL-L , UPC: 196247540345 , Code: STW-AT1-RSRS50-SW0169521001-L
  • Smartwool Classic All-Season Merino Base Layer Long Sleeve - Men's, Natural, Extra Large, SW0169521001-XL , MPN: SW0169521001-(100) NATURAL-XL , UPC: 196247540444 , Code: STW-AT1-RSRS50-SW0169521001-XL
Compare (0)
1 item has been added
Add at least two items to compare