Smartwool Women’s Classic All-Season Merino Base Layer Crew 2026
An all-season favorite, the Women’s Classic All-Season Merino Base Layer Long Sleeve can be sported as a base layer in the fall or summer when it’s time to go backpacking. This base layer features Core Spun technology—which is Merino wrapped around a nylon core for added durability while still keeping the comfort of ultra-soft, responsibly sourced Merino next to skin. Our Raglan sleeves eliminate shoulder seams for perfect comfort under a pack, and smooth merrow stitching wraps from side to front to keep you looking as good as you feel.
- Slim
- Our slim fit is intended to follow the contours of the body
- Our lightweight Merino jersey fabric uses a recycled nylon core while still keeping 100% Merino wool next to skin
- Merrow stretch stitching designed to help elevate comfort, range of motion, and fit
- Side seams wrap to front
- Raglan sleeves
- Made in Vietnam: 88% Merino Wool, 12% Recycled Nylon. Exclusive of Decoration.
- SW016912
Women’s Smartwool Apparel Size Chart
| Size | Chest | Waist | High Hip | Hip | Arm Length | Inseam |
|---|---|---|---|---|---|---|
| XS 0-2 |
32″-33″ 81.5-84cm |
24″-25″ 61-63.5cm |
31″-32″ 78.5-81.5cm |
35″-36″ 81-91.5cm |
27″-28″ 68.5-71cm |
29″-30″ 73.5-76cm |
| S 4-6 |
34″-35″ 86.5-89cm |
26″-27″ 66-68.5cm |
33″-34″ 84-86.5cm |
37″-38″ 94-96.5cm |
28″-29″ 71-73.5cm |
30″-31″ 76-78.5cm |
| M 8-10 |
36″-38″ 91.5-96.5cm |
28″-30″ 71-76cm |
35″-36″ 89-91.5cm |
39″-40″ 99-101.5cm |
29″-30″ 73.5-76cm |
31″-32″ 78.5-81.5cm |
| L 12-14 |
39″-41″ 99-104cm |
31″-34″ 78.5-86.5cm |
37″-39″ 94-99cm |
41″-43″ 104-109cm |
30″-31″ 76-78.5cm |
32″-33″ 81.5-84cm |
| XL 16-18 |
41″-44″ 104-112cm |
35″-38″ 89-96.5cm |
40″-43″ 101.5-109cm |
44″-47″ 112-119.5cm |
31″-32″ 78.5-81.5cm |
33″-34″ 84-86.5cm |
Plus Sizes |
||||||
| 1X 16-18 |
43″-45″ 109-114.5cm |
39″-41″ 99-104cm |
44″-46″ 112-117cm |
45″-47″ 114.5-119.5cm |
31″ 78.5cm |
30″-32″ 76-81.5cm |
| 2X 20-22 |
47″-49″ 119.5-124.5cm |
43″-46″ 109-117cm |
48″-50″ 122-127cm |
49″-51″ 124.5-129.5cm |
31″ 78.5cm |
30″-32″ 76-81.5cm |
| 3X 24-26 |
51″ – 53″ 129.5 – 134.5cm |
47″ – 50″ 119.5 – 127cm |
52″ – 54″ 132 – 137cm |
53″ – 55″ 134.5 – 139.5cm |
31″ 78.5cm |
30″ – 32″ 76-81.5cm |
| 4X 28-30 |
55″-57″ 139.5 – 145cm |
52″-55″ 132 – 139.5cm |
56″-58″ 142 – 147.5cm |
57″ – 59″ 145 – 150cm |
33″ 84cm |
30″ – 32″ 76-81.5cm |
| How to Measure | Measure under the arms, around fullest part of chest and back circumference. | Measure around natural waistline, keeping tape a bit loose. | Measure around high hip circumference approximately 4″ below natural waistline. | Measure around the fullest part of hip circumference, parallel to the floor. | With elbow bent slightly, measure from center back of neck, across top of shoulder, to elbow and down to wrist bone. | Measure along inside leg from crotch to ankle bone. Or measure a good fitting base layer pant from crotch seam to bottom along seam. |


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