UA Base 3.0 is built for very cold weather and moderate activity. It uses a unique pattern that's designed to trap heat without adding bulk. Think long underwear, revamped for today's top athletes.

Keeps You Warm
Scent Control
4-Way Stretch

Product Details

UA Base™ 3.0 All Season Baselayer provides midweight warmth at many activity levels & cold temperatures
UA Scent Control Technology to keep you undetected in all pursuits
Soft, brushed grid interior traps air, managing your body's microclimate to keep you warm & comfortable
Material wicks sweat & dries really fast
4-way stretch material moves better in every direction

Size & Fit

Athlete is 188 cm (or 6'2") & wearing size LG

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

Size & Fit Guide

How to measure

CHEST: Place the 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. Be careful not to squeeze too tight to allow give.

TALL Sizes: All tall sizes are 2”/ 5 cm longer than regular sizes. Sleeve lengths are adjusted proportionately depending on silhouette.

Size Chart

Size Chart (Centimeters)
Size	CHEST (cm)	WAIST (cm)
XS	79 - 86	71 - 74
SM	86 - 94	74 - 79
MD	94 - 104	79 - 86
LG	104 - 112	86 - 94
XL	112 - 122	94 - 104
XXL	122 - 132	104 - 116
3XL	132 - 142	116 - 127
4XL	142 - 152	127 - 138
5XL	152 - 163	138 - 150

Size Chart (Inches)
Size	CHEST (in)	WAIST (in)
XS	31 - 34	28 - 29
SM	34 - 37	29 - 31
MD	37 - 41	31 - 34
LG	41 - 44	34 - 37
XL	44 - 48	37 - 41
XXL	48 - 52	41 - 45½
3XL	52 - 56	45½ - 50
4XL	56 - 60	50 - 54½
5XL	60 - 64	54½ - 59

Specs & Care

Style #: 1343243
81% Polyester/19% Elastarell
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(80)

4.6

Recommended: 93%

80 Ratings

Comfort

Min

Max

Fit

Runs Small

Runs Large

Performance

Min

Max

What Customers Are Saying:

The product is a well-reviewed cold weather base layer that provides warmth and flexibility for various outdoor activities.
Customers praise the lightweight yet warm material and the snug, compression-like fit.
Some reviewers were disappointed with the quality and warmth compared to previous versions.
Overall, the consensus is that it is a good cold weather base layer that offers warmth and mobility.

This AI generated summary is based on real customer reviews.

Just Right

JTBo

last month

Excellent product…very warm

Comfort

Min

Max

Fit

Runs Small

Runs Large

Performance

Min

Max

Location: Louisiana

Reviews: 1

Votes: 0

Athlete Type: Casual

Size Purchased: 3XL

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Helpful?

Base 3.0

Base 3

2 months ago

Great feel true to size while being slightly snug which I prefer!

Comfort

Min

Max

Fit

Runs Small

Runs Large

Performance

Min

Max

Reviews: 1

Votes: 0

Athlete Type: Avid

Size Purchased: XL

MoreLess

Helpful?

Nice and Comfort

Kar1388

2 months ago

Super comfortable and snug fit. Perfect for cold weather

Comfort

Min

Max

Fit

Runs Small

Runs Large

Performance

Min

Max

Location: Halifax,NS

Reviews: 1

Votes: 0

Athlete Type: Casual

Size Purchased: MD

MoreLess

Helpful?

Q&A(5)

What’s the best base layer for snowboarding

Krazi

3 months ago

We may recommend checking out the Men's UA Base 3.0 Crew!

UA Expert Gabrielle H

3 months ago

Helpful?

What size for a 6 foot, 220 pound guy?

BabsC

4 months ago

This would vary depending upon personal measurements. We would recommend comparing your measurements to our Size & Fit Guide for the best size recommendation!

UA Expert Gabrielle H

4 months ago

Helpful?

Is a 3xl any longer than a 2xl? I bought a 2xl but it is too short. I wish this came in tall sizes.

Big Dad

last year

There is not much difference in length between the sizes. We apologize!

UA Expert Shaz W

last year

Helpful?

How would you rate our products and descriptions?

UA Base 3.0Men's Crew

Product Description

UA Base 3.0
Men's Crew