The Boatneck
The Boatneck
The Boatneck
The Boatneck
The Boatneck
The Boatneck
The Boatneck
The Boatneck
The Boatneck
The Boatneck
The Boatneck

The Boatneck

Regular price $65.00 Sale price $52.00 USD
Buy 2, Get $20 OFF

Free Shipping over $100 (After discounts, before shipping and taxes).

Hidden coverage (that you’ll want to show off)

The best undershirt for those necklines that have a wider appeal. This versatile style has an open and low neckline. A barely-there design means you can throw it on under anything, with ease.

Want to keep it short? Try The Boatneck Crop.


Our Essential Undershirt collection was designed to keep you feeling fresh and your clothes clean.

  • Absorbent underarm gusset with Contemporary Cotton Technology
  • Thermo-regulating TENCEL™
  • Invisible fit
  • Low, wide-cut neckline on front & back side
  • Can be worn on or off-shoulder
  • Seamless sleeves
  • Made in Canada
  • 90% TENCEL™ is soft, breathable and keeps you cool and dry
  • 10% LYCRA® for optimal stretch and comfort
  • Fabric is responsibly knit and dyed in Canada
  • Machine wash cold, tumble dry low
Being mindful of our impact has always been at the core of what we do. This year we’re taking it further. We are in the process of auditing our impact. Stay tuned, we'll be sharing the results later this year.
Free shipping on U.S. and Canada orders over $100. All full-priced U.S. orders are eligible for free returns within 30 days of your delivery date. Some exclusions may apply, learn more here.

Customer Reviews

Based on 22 reviews
Serena W.
I bought the boatneck to

I bought the boatneck to go under some shirts I have with wider/larger openings at the head (where my other Numi undershirts were showing a bit along the shoulders). At first I worried the boatneck would be uncomfortable and slip down my shoulders, but I had nothing to worry about! It was super comfortable under my shirt and I didn't have to mess around with it at all throughout the day. Of course it kept me sweat-free all day long too!

Jennifer J.
Just what I needed!

I've love my basic Numi top, but wanted one that I could wear with wider necked sweaters and dresses. This does the trick! It is very low cut in the front and back, but that works fine for an undergarment.

Nicole M.
I love these tops. I

I love these tops. I bought one thinking I would use it from time to time under a sweater. Now I own three because they are so comfortable, easy to layer, have prolonged the life of so many different items in my closet, and eliminated any smells!

Marta S.
Finally found!

Works perfectly! It seems like being given back half of my wardrobe.

Barbara M.
This cut really works great

This cut really works great with v-neck sweaters.

Danielle T.
Lets me wear all the clothes I love and used to pass over in fear of sweat stains

I like the wider neck of the boatneck for versatility, though it does slip down the shoulder a little. I sized up and am glad I did as it's snug around the tummy. Wearing this makes me so much more confident at work and events where I tend to be a nervous sweater. I'm wearing more of my favourite things now too, didn't even realise how much sweat stain fears were dictating my dressing choices before.

Amanda H.
Love it!

Numi has been a game-changer for me. The boatneck is perfect under sweaters and tops with a wider neck. I’m an XS in all my tops, but prefer a Small for Numi. It still fits great under my XS clothes.

Explore Our Fabric Technology

Sustainable Silk™

Meet the easy wear, easy care Numi silk collection. Wear your silk whenever, however. Stylish pieces made from Numi's Sustainable Silk that look and feel beautiful and are free from the standard silk stresses like staining and dry cleaning.

Contemporary Cotton™

Liberate your wardrobe.  The Essential Undershirt, a cult product that changes lives and dry cleaning bills.  Wear that favorite shirt without a care.  Sumptuously soft base layers that keep you feeling fresh and clean, today and tomorrow.


Forward Thinking Materials

Functional fabrics designed to make your life easier and be kinder to the planet.

Contemporary Cotton™ is a high-performance moisture management system that moves moisture away from the body.  It keeps you cooler and drier.  And washes clean of odors. 

Sustainable Silk™ is a blend of Naia™ and silk. It is treated with bluesign® certified stain repellent technology making the garment stain resistant and machine washable.

About Numi

Numi was born out of personal necessity. One day our founder, Michelle, realized she never wore her favorite clothes. They were either prone to noticeable sweat stains or expensive to dry clean. When she looked for a solution, there was nothing available. And so Numi was born.

Numi is a brand that celebrates what it means to be a woman. We make consciously created products that make life a little easier for us all and inspire a culture of kindness.

Committed to Sustainability

Being mindful of our impact has always been at the core of what we do. We like to think of it as a living commitment that grows and evolves with us. This year we're taking it further. We are in the process of auditing ourselves to see how and where we can be kinder to the planet.

Learn more

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