Our Men's Merino Sport 150 Brief takes all of the tech you love from our Merino boxer briefs—a lightweight feel, breathability, anti-stink Merino—and adds a looser fit. With a fully functional fly and a wide, Merino-lined elastic waistband, you'll experience maximum comfort all day long. No matter if you're hitting the trail for a three-day camping trip or trying new sports, our Men's Merino 150 Boxer brings you the performance and comfort you can expect from our ultra-soft, responsibly sourced Merino wool.
Men's Smartwool Apparel Size Chart
Size |
Chest |
Waist |
Hip |
Arm Length |
Inseam |
S |
36"-38" 91.5-96.5cm |
29"-31" 73.5-78.5cm |
36"-38" 89-96.5cm |
31"-32" 68.5-81.5cm |
30"-31" 73.5-78.5cm |
M |
39"-41" 99-104cm |
32"-34" 81.5-86.5cm |
39"-41" 99-104cm |
32"-33" 81.5-84cm |
31"-32" 78.5-81.5cm |
L |
42"-44" 106.5-112cm |
35"-37" 89-94cm |
42"-44" 106.5-112cm |
33"-34" 84-86.5cm |
32"-33" 81.5-84cm |
XL |
45"-48" 114.5-122cm |
38"-40" 96.5-101.5cm |
45"-48" 114.5-122cm |
34"-35" 86.5-89cm |
33"-34" 84-86.5cm |
XXL |
49"-51" 124.5-129.5cm |
41"-44" 104-112cm |
49"-51" 124.5-129.5cm |
35"-36" 89-91.5cm |
34"-35" 86.5-89cm |
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 the fullest part of hip circumference, parallel to the floor. |
With elbow bent slightly, measure frocm 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. |
Women's Smartwool Apparel Size Chart
Size |
Chest |
Waist |
High Hip |
Hip |
Arm Length |
Inseam |
XS 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"-40" 99-101.5cm |
31"-32" 78.5-81.5cm |
37"-38" 94-96.5cm |
41"-42" 104-106.5cm |
30"-31" 76-78.5cm |
32"-33" 81.5-84cm |
XL 16 |
41"-42" 104-106.5cm |
33"-34" 84-86.5cm |
39"-40" 99-101.5cm |
43"-44" 109-112cm |
31"-32" 78.5-81.5cm |
33"-34" 84-86.5cm |
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 3" 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. |
Women's Smartwool Seamless Bra Size Chart
Size |
Comparable Bra Size |
Recommended Impact |
XS |
30A, 30B, 30C, 32A, 32B |
A, B - Medium Impact |
C - Low Impact |
S |
32A, 32B, 32C, 34A, 34B |
A, B - Medium Impact |
C - Low Impact |
M |
34A, 34B, 34C, 36A, 36B |
A, B - Medium Impact |
C - Low Impact |
L |
36A, 36B, 36C, 38A, 38B |
A, B - Medium Impact |
C - Low Impact |
XL |
38A, 38B, 38C |
A, B - Medium Impact |
C - Low Impact |
Kid's Smartwool Apparel Size Chart
Size |
Age |
Chest |
Waist |
Height |
Weight |
XS |
4-5 |
24"-25" 61-63.5cm |
22"-22.5" 56-57cm |
42"-48" 106.5-122cm |
42-49 lbs |
S |
6-8 |
22.5"-26.5" 57-67.5cm |
23"-24" 58.5-61cm |
48"-54" 122-137cm |
49-59 lbs |
M |
9-10 |
27"-28" 68.5-71cm |
24.5"-25" 62-63.5cm |
54"-57" 137-145cm |
59-75 lbs |
L |
11-12 |
28.5"-30" 72.5-76cm |
25.5"-26" 65-66cm |
57"-60" 145-152.5cm |
75-89 lbs |
XL |
13-14 |
30.5"-32" 77.5-81cm |
26.8"-28" 67.5-71cm |
60"-62" 152.5-157.5cm |
89-100 lbs |