We all hate it. That stiff, distracted feeling you get when you're out in the cold. That's why, we built a baselayer that keeps you warm and dry without being bulky or riding up, so you can stay focused all season long.

Keeps You Warm
Ventilated
4-Way Stretch

Product Details

Dual-layer fabric with an ultra-warm, brushed interior & a smooth, fast-drying exterior
Stretch-mesh back & underarm panels provide strategic ventilation
4-way stretch material moves better in every direction
Material wicks sweat & dries really fast
Ergonomic design keeps seams off of high abrasion areas
Mock neck construction for added coverage & warmth
Dropped, shaped hem

Size & Fit

Fitted: Streamlined fit that’s not too tight or too loose.

Size & Fit Guide

How to measure

CHEST: Place tape measure under your arms at the fullest part of your chest, wrap around your body until your fingers meet and mark the measurement.

WAIST: Measure around your natural waistline-right above your hips. Be careful not to squeeze too tight to allow a little give.

HIPS: With your feet together, measure around the fullest part of your hips to ensure you’ll have enough room to move comfortably.

Size Chart

Size Chart (Centimeters)
Size	US Sizes	CHEST (cm)	WAIST (cm)	HIPS (cm)	HEIGHT (cm)
YXS	7	63 - 66	58 - 61	66 - 69	119 - 128
YSM	8	66 - 69	61 - 63	69 - 71	128 - 135
YSM+	8+	70 - 74	69 - 71	74 - 77	128 - 135
YMD	10 - 12	69 - 74	63 - 69	71 - 79	135 - 150
YMD+	10+/12+	74 - 79	71 - 79	77 - 85	135 - 150
YLG	14 - 16	74 - 83	69 - 76	79 - 86	150 - 165
YLG+	14+/16+	79 - 88	79 - 86	85 - 93	150 - 165
YXL	18 - 20	83 - 90	76 - 84	86 - 94	165 - 178
YXL+	18+/20+	88 - 95	86 - 94	93 - 100	165 - 178

Size Chart (Inches)
Size	US Sizes	CHEST (in)	WAIST (in)	HIPS (in)	HEIGHT (in)
YXS	7	25 - 26	23 - 24	26 - 27	47 - 50½
YSM	8	26 - 27	24 - 25	27 - 28	50½ - 53
YSM+	8+	27.5 - 29	27 - 28	29 - 30½	50½ - 53
YMD	10 - 12	27 - 29	25 - 27	28 - 31	53 - 59
YMD+	10+/12+	29 - 31	28 - 31	30½ - 33½	53 - 59
YLG	14 - 16	29 - 32.5	27 - 30	31 - 34	59 - 65
YLG+	14+/16+	31 - 34.5	31 - 34	33½ - 36½	59 - 65
YXL	18 - 20	32.5 - 35.5	30 - 33	34 - 37	65 - 70
YXL+	18+/20+	34.5 - 37.5	34 - 37	36½ - 39½	65 - 70

Specs & Care

Style #: 1366373
87% Polyester/13% Elastane
Imported
Machine wash cold with like colors
Use only non-chlorine bleach when needed
Tumble dry low
Do not iron
Do not use softeners
Do not dry clean

Reviews(169)

4.9

Recommended: 98%

152

169 Ratings

Comfort

Min

Max

Fit

Runs Small

Runs Large

Performance

Min

Max

Warm but with the ability to move

Chrisgarett13

9 days ago

[This review was collected as part of a promotion.] My son picked this for early in baseball season to stay warm without extra weight. He’s happy with his selection as it’s kept him warm but he still has full range of motion.

Location: Kouts, IN

Reviews: 1

Votes: 0

Gender: Male

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Helpful?

Perfect for chilly weather

Chrisgarett13

18 days ago

This works great under my son’s baseball jersey when it’s chilly out. Keeps him warmer and doesn’t get in the way.

Comfort

Min

Max

Fit

Runs Small

Runs Large

Performance

Min

Max

Location: Kouts, IN

Reviews: 1

Votes: 0

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Helpful?

Great design (mesh on the side)

Sha_q

2 months ago

Great for hockey. The mesh on the side ventilates well while the fleece in the middle keeps my 7 year old warm.

Comfort

Min

Max

Fit

Runs Small

Runs Large

Performance

Min

Max

Reviews: 1

Votes: 0

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Q&A(1)

My 9 yr old grandson is tall but very thin. Would medium be best? Couldn’t find size chart. Thanks

3 years ago

The Size & Fit Guide is linked right below the colorways. Keeping in mind this is a fitted cut we recommend sticking with his usual sweater size. If you're looking for a bit more room we suggest sizing up.

UAExpert

3 years ago

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ColdGear®Boys' Mock Long Sleeve

Product Description

ColdGear®
Boys' Mock Long Sleeve