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<p><style type="text/css" id="isPasted"></style><span data-sheets-userformat="{&quot;2&quot;:769,&quot;3&quot;:{&quot;1&quot;:0},&quot;11&quot;:4,&quot;12&quot;:0}" data-sheets-value="{&quot;1&quot;:2,&quot;2&quot;:&quot;A sweat-proof undershirt is a type of undershirt designed to prevent sweat from showing through outer clothing. Our undershirts contain moisure-wicking properties and sweat-absording underarm pads.&quot;}" style="font-size:10pt;font-family:Arial;font-style:normal;">A sweat-proof undershirt is a type of undershirt designed to prevent sweat from showing through outer clothing. Our undershirts contain moisture-wicking properties and sweat-absorbing underarm pads.</span></p>

A sweat-proof undershirt is a type of undershirt designed to prevent sweat from showing through outer clothing. Our undershirts contain moisture-wicking properties and sweat-absorbing underarm pads.

What is a sweat-proof undershirt?

Product & Fabric Info

Essential Undershirts

How do I find my size?

How should an undershirt fit?

Sizing

Do your products contain PFAS?

Wash & Dry Instructions

How to handle wrinkles on silks

How to handle tough stains

Care Instructions

What is your Sustainable Silk™ made of?

What makes your Sustainable Silk™ stain-resistant?

Sustainable Silk™

How does the sweat-absorbing underarm pad work?

What are Essential Undershirts made of?

How is contemporary cotton different from normal cotton?

Can I wear my undershirt on its own?

What makes Numi undershirts sweat-proof?

How do I wear an undershirt?

What is TENCEL™?

How do I know if my order has been placed?

Where do I find my order number?

Where do I find my tracking number?

Why haven't I received a shipping confirmation email?

My order confirmation shows a different price than I saw in my cart and at checkout

Why can't I find your emails?

What is a Foreign Transaction Fee?

About My Order

How much is shipping?

How long does shipping take?

Can I edit my shipping address?

My package says delivered, but I haven't received it

Which countries does Numi ship to?

Shipping

Are returns free?

Can I return or exchange items I bought on sale?

How do I start a return or exchange?

Where can I drop off my return?

Returns & Exchanges

Payment Methods

How do I check my Numi Store Credit balance?

Can I return or exchange a gift card?

Can I use a discount code or reward points towards my gift card?

Gift Cards & Store Credit

Where can I use my discount code?

I tried to input two discount codes at the same time, why didn't they both work?

I am trying to get the undershirt bundle discount while also using a discount code, but it’s not working.

What is a sweat-proof undershirt?Updated 9 months ago