The Mock
The Mock
The Mock
The Mock
The Mock
The Mock

The Mock

Regular price $75.00 Sale price $52.50 USD

All bases covered

A practical yet polished layer to top off your collection. The Mock features a comfortable, slim-fit neckline with a full sleeve and streamlined design. Made for layering season.

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™
  • Soft and stretchy neckline
  • Long, fitted 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 $150. All full-priced U.S. orders are eligible for free returns within 30 days of your delivery date. 

Holiday Deadlines

For delivery by 12.24 please place your order by:

11.25 for International Shipping 

12.13 for US Shipping Ground | 12.20 for Priority

12.14 for (most) Canadian Locations

Items purchased at 20% off and above are final sale. Find out more about our return policy here.

Customer Reviews

Based on 54 reviews
Goldie S.
Fashionable and comfortable

I love this! I can layer it and wear it alone and I don’t need to worry about any staining

Monica H.
This shirt fits amazing great

This shirt fits amazing great casual or dressy.

Anna T.
Beautiful material, great fit

Couldn't find good looking skin coloured undershirts with sleeves in Europe and finally ended up on Numi's website through a blog recommendation.

Ordered few pieces and got them in less than a week and the customs was about 15% or the bill (- delivery cost of course). The size was fantastic fit, same as normally in Germany and Scandinavia (where I'm from) where people are taller and bigger than in Italy where I live. The quality is excellent and although I bought them to protect cashmere and silk work blouses and blazers, they have a very sophisticated look and I felt gorgeous trying them on just under a blazer without a blouse on top. I bought the Signature and also the Mock neck and I am most definitely ordering more.

Also love the blog and the values behind the brand. Hope we will be able to order these soon directly from Europe as well! Thank you!

Siobhan C.
so worth it!

I have been eyeing this for a while and once my size was back in stock I had to buy it. It was more expensive than my usual crop, but so worth it! This is so soft and comfortable, perfect for layering or even wearing on its own (the black kind of hides the underarm stitching). I am upset I went most of the winter without it! Only thing I’d advise is that it’s a little on the smaller side in my opinion, so if you’re between sizes I might size up. But the form-fit is great for layering, so it’s up to how you like your fit.

Karen L.
Love this shirt.

I love this undershirt. It fits snugly without being tight. It looks great on its own or with a sweater or jacket. Washes easily. Soft and comfortable.

Kerry Y.
Mock Top Numi xs Black

Wonderful fit and sweat coverage. Would highly recommend.

Jess D.
Would Recommend!!

My go to for an undershirt! Comfortable, sleek and soft. Great fit too!

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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