Does this run true to size?

Yes, it runs true to size, but expect a snug, trim fit by design. The AIRKNITx Cotton V-Neck is noticeably longer than comparable Pima cotton undershirts in the same size, which is intentional for bulk-free layering under dress shirts and polos.

Will this work under a polo shirt?

Yes, many customers wear this under polos specifically because of the trim fit and extra length. If you want the undershirt sleeves completely hidden, size down. One customer found a small snug but ideal under polos, though the fit is still comfortable for active wear.

What's the fabric made of and how does it feel?

The undershirt is 89% cotton, 9% elastane, and 2% nylon with a smooth cotton micro mesh construction that feels light and airy. The four-way stretch and moisture-wicking properties make it feel barely there against your skin while managing sweat and humidity.

Is this good for hot and humid weather?

Absolutely, this was designed specifically with New York summers in mind. The cotton micro mesh breathes exceptionally well in humidity, and customers confirm it performs great in warm weather, even during active situations like hikes.

How do I care for this shirt?

Machine wash cold with like colors and tumble dry low. The durable ladder stitch construction and elastane blend hold up well with this care routine.

AIRKNITˣ Cotton V-Neck Undershirt

Name: AIRKNITˣ Cotton V-Neck Undershirt
Brand: Mack Weldon
SKU: M0DT05-BW-S
Price: 42.0 USD
Availability: InStock

$42

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(8)

IN CM

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Micro-Brushed French terry

So you get an ultra-soft feel (that doesn’t fade in the wash).

image of man wearing navy blue sweatpants

Streamlined Fit

So you can wear them anywhere.

close up of the waist band of ACE sweatpant

Perfect Stretch + Recovery

So they’re always comfortable, but never saggy.

close up of ribbed cuff on the ankle of ACE navy blue sweatpant

Back-Ribbed Ankle Cuffs

So they maintain their shape at the hem.

Man wearing Airknitx cotton v-neck Undershirt in Bright White

Editors' Notes. We set out to design a pair of underwear that could handle a New York summer: Subway Stations. Humid streets. Butt sweat. The end result targets extra airflow with light as -air cotton micro mesh to keep you cool and dry. (Seeing as it's made with natural fibers, it was only right that we photograph it in central park)