SmartWool Men's Classic All-Season Merino Base Layer Bottoms

Name: SmartWool Men's Classic All-Season Merino Base Layer Bottoms
Brand: smartwool
SKU: B0D6D4W9Y5-variation
Price: 31.2 USD
Availability: InStock

$31.20

~~$104~~ $31.20

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Outdoor Sock & Apparel Size Guide

Use the charts below to find the right fit for socks, tops, bottoms, headwear and gloves. Measurements are shown in both inches and centimetres. Tip: if you fall between two sizes, most merino wool apparel is designed to layer — choose the larger size for a relaxed fit and the smaller size for a performance fit.

Unisex Socks Men's Apparel Women's Apparel Kids' Socks Headwear & Gloves

1. Sock Size (Unisex)

Sizing is based on U.S. shoe size and EU equivalent.

Size	U.S. Men's	U.S. Women's	EU	UK
S	3 – 5.5	4 – 6.5	34 – 38	2 – 4.5
M	6 – 8.5	7 – 9.5	39 – 42	5.5 – 8
L	9 – 11.5	10 – 12.5	43 – 46	9 – 11.5
XL	12 – 14.5	—	47 – 50	12.5 – 14

Sock sizing is based on foot length. If you wear a half size, size up for a more relaxed fit or down for a snug performance fit.

2. Men's Tops & Base Layers

Body measurements. Measure over light clothing.

Size	Chest (in)	Chest (cm)	Waist (in)	Waist (cm)	Sleeve (in)	Sleeve (cm)	Hip (in)	Hip (cm)
XS	33 – 35	84 – 89	27 – 29	69 – 74	31 – 32	79 – 81	33 – 35	84 – 89
S	36 – 38	91 – 97	29 – 31	74 – 79	32 – 33	81 – 84	36 – 38	91 – 97
M	39 – 41	99 – 104	32 – 34	81 – 86	33 – 34	84 – 86	39 – 41	99 – 104
L	42 – 44	107 – 112	36 – 38	91 – 97	34 – 35	86 – 89	42 – 44	107 – 112
XL	46 – 48	117 – 122	40 – 42	102 – 107	35 – 36	89 – 91	46 – 48	117 – 122
XXL	50 – 52	127 – 132	44 – 46	112 – 117	36 – 37	91 – 94	50 – 52	127 – 132

Chest: measure under the arms, across the fullest part. Sleeve: from the centre back of the neck, over the shoulder, to the wrist.

3. Women's Tops & Base Layers

Body measurements over light clothing.

Size	Numeric	Bust (in)	Bust (cm)	Waist (in)	Waist (cm)	Hip (in)	Hip (cm)	Sleeve (in)	Sleeve (cm)
XS	0–2	30 – 32	76 – 81	24 – 26	61 – 66	33 – 35	84 – 89	29 – 30	74 – 76
S	4–6	32 – 34	81 – 86	26 – 28	66 – 71	35 – 37	89 – 94	30 – 31	76 – 79
M	8–10	34 – 36	86 – 91	28 – 30	71 – 76	37 – 39	94 – 99	31 – 32	79 – 81
L	12–14	37 – 39	94 – 99	31 – 33	79 – 84	40 – 42	102 – 107	32 – 33	81 – 84
XL	16	41 – 43	104 – 109	34 – 36	86 – 91	44 – 46	112 – 117	33 – 34	84 – 86

Bust: measure at the fullest part, keeping the tape level. Waist: measure at the narrowest point, just above the navel.

4. Men's Bottoms

Pants, leggings, tights & shorts.

Size	Waist (in)	Waist (cm)	Hip (in)	Hip (cm)	Inseam – Short (in)	Inseam – Regular (in)	Inseam – Long (in)
XS	27 – 29	69 – 74	33 – 35	84 – 89	29	31	33
S	29 – 31	74 – 79	35 – 37	89 – 94	29	31	33
M	32 – 34	81 – 86	38 – 40	97 – 102	30	32	34
L	36 – 38	91 – 97	42 – 44	107 – 112	30	32	34
XL	40 – 42	102 – 107	46 – 48	117 – 122	30	32	34
XXL	44 – 46	112 – 117	50 – 52	127 – 132	30	32	34

Inseam is the inside-leg length. For bottoms sold as Short / Regular / Long, pick the inseam length that matches your height.

5. Women's Bottoms

Pants, tights, leggings & shorts.

Size	Numeric	Waist (in)	Waist (cm)	Hip (in)	Hip (cm)	Inseam – Short (in)	Inseam – Regular (in)	Inseam – Long (in)
XS	0 – 2	24 – 26	61 – 66	33 – 35	84 – 89	28	30	32
S	4 – 6	26 – 28	66 – 71	35 – 37	89 – 94	28	30	32
M	8 – 10	28 – 30	71 – 76	37 – 39	94 – 99	28	30	32
L	12 – 14	31 – 33	79 – 84	40 – 42	102 – 107	28	30	32
XL	16	34 – 36	86 – 91	44 – 46	112 – 117	28	30	32

6. Hats & Headwear

Beanies, neck gaiters & caps.

Size	Head Circumference (in)	Head Circumference (cm)
OSFM	21 – 23.5	54 – 60
S / M	21 – 22.5	54 – 57
L / XL	22.5 – 24	57 – 61

Measure around the forehead, just above the ears and across the widest part at the back of the head.

7. Gloves & Mittens

Unisex sizing. Measure around the palm.

Size	Palm Circumference (in)	Palm Circumference (cm)	Hand Length (in)	Hand Length (cm)
XS	6 – 6.5	15 – 16	6.5 – 7	16.5 – 18
S	7 – 7.5	18 – 19	7 – 7.5	18 – 19
M	8 – 8.5	20 – 21	7.5 – 8	19 – 20
L	9 – 9.5	23 – 24	8 – 8.5	20 – 21.5
XL	10 – 10.5	25 – 27	8.5 – 9	21.5 – 23

Palm circumference: measure around the knuckles of a relaxed hand, excluding the thumb. Hand length: from the base of the palm to the tip of the middle finger.

8. Kids' Socks

Sized by age range and shoe size.

Size	Age Range	U.S. Kids' Shoe	EU Shoe	UK Shoe
S	4 – 7 yrs	11 – 13	28 – 32	10 – 12
M	7 – 10 yrs	13 – 3Y	32 – 34	12 – 2Y
L	10 – 14 yrs	3Y – 6Y	35 – 38	2Y – 5Y

Toddler (under 4 yrs) styles are sized as XS — please refer to the specific product page for that chart.

How to Measure

Three quick steps for an accurate fit.

1. Use a Soft Tape

Use a flexible fabric tape measure. Keep it level and snug against the body, without pulling tight.

2. Measure Over Light Layers

For body measurements, wear light clothing. Measure chest or bust at the fullest part, waist at the natural waistline.

3. Pick by Fit Preference

Between two sizes? Choose the larger size for a relaxed fit and the smaller size for a close-to-skin, performance fit.

SmartWool Men's Classic All-Season Merino Base...

Twilight Blue /

Medium

$31.20

~~$104~~ $31.20

SmartWool Men's Classic All-Season Merino Base...

Twilight Blue /

Medium

$31.20

~~$104~~ $31.20

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