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US / rest of world
United States
Europe
Europe

We ship around the world from the United States via USPS, UPS Mail Innovations, and FedEx.

For European customers, we offer our best selling shirts shipped directly from the Netherlands. (No shipping delays, unexpected duties, or customs clearance charges.)

Free Shipping, Free Exchanges

Free Ground Shipping

Have a return or exchange? Simple!
Head over to returns.woolandprince.com.

International Shipping Flat Rates

USPS First Class Mail (15 to 30 days) for $10 on orders over $150

FedEx Express (3 to 6 days) for $35 on orders over $150

More shipping information here.
Underwear return policy here.

Care Instructions

BUTTON-DOWNS & SPREAD COLLAR

When necessary, we recommend taking your shirt to the dry cleaners for a crisp look. You can also machine wash your shirt using normal cycle on cold with regular laundry detergent. Lay flat or line dry. Don't use drying machine.

TEES, UNDERWEAR, & SOCKS

Gentle cycle on cold with regular laundry detergent. Lay flat or line dry. Don't use drying machine.

100% MERINO TEES & POLOS

Hand wash cold. Lay flat or line dry. Don't use drying machine.

Size Guide

Neck

Measure around the middle of your neck, leaving the tape loose.

Waist

Measure around your natural waist, keeping the tape a bit loose.

Chest

Measure under your arms around the fullest part of your chest

Arm length

Measure from the back of your neck across the top of your shoulder to your elbow, and down to your wrist

Size Extra SmallXS
Neck 13.5-14"
Chest 32-34"
Waist 26-28"
Arm Length 31-32"
Size SmallS
Neck 14-14.5"
Chest 35-37"
Waist 29-31"
Arm Length 32-33"
Size MediumM
Neck 15-15.5"
Chest 38-40"
Waist 32-34"
Arm Length 33-34"
Size LargeL
Neck 16-16.5"
Chest 41-43"
Waist 35-37"
Arm Length 34-35"
Size Extra LargeXL
Neck 17-17.5"
Chest 44-46"
Waist 38-40"
Arm Length 35-36"

Need more size information? Click here for shirt measurements and here for a note about our fits.

Free shipping, free exchanges in the USA. Free shipping, free exchanges in the USA. Check out our New Arrivals.

100% Wool Undershirt

We don’t make bold claims lightly, but you’re looking at the first ever thoughtfully designed undershirt made from 100% merino wool. Our undershirt has two critical improvements: a long, snug torso for best-in-class “stays-tucked-in” fit and a wider/longer v-neck opening to hide the undershirt from “peeking out”. Pair that with our super-soft, custom developed merino fabric, and you’ve got yourself—another bold claim coming at you—the best undershirt on the market. It’s so comfortable that you might just sleep in it.

We don’t make bold claims lightly, but you’re looking at the first ever thoughtfully designed undershirt made from 100% merino wool. Our undershirt has two critical improvements: a long, snug torso for best-in-class “stays-tucked-in” fit and a wider/longer v-neck opening to hide the undershirt from “peeking out”. Pair that with our super-soft, custom developed merino fabric, and you’ve got yourself—another bold claim coming at you—the best undershirt on the market. It’s so comfortable that you might just sleep in it.

Not an ordinary undershirt

Wool is always best next-to-skin, and now there’s another way to wear it. These pieces are specially designed to go unnoticed and stay tucked in all day. Get even more wears out of your button-down wearing an undershirt. Available in two distinct fabrics.

Read the knit top guide and learn about our different fabrics.

Fabric

100%Lite
150gsm
100% Merino Wool
17.5 Micron

Care
Hand wash cold. 
Lay flat or line dry.
Do not use a drying machine.

Origin
Made in Korea.

Customer Reviews

Based on 57 reviews
75%
(43)
7%
(4)
14%
(8)
2%
(1)
2%
(1)
P
Paul F.
Height: 5'11"
Weight: 180
Size Purchased: L
Perfect!

Lightweight, comfortable undershirt. I love the ivory color!

J
J.M.
Height: 5'7"
Weight: 132
Size Purchased: S
Everything It Claims

This undershirt is light, silky and fits well. The v-neck also is cut very deeply, which contributes to comfort in the summer. It also comes down below the underpants, which ensures that it stays tucked in. My only complaint is that it is noticeably vanilla in shade. It is a bit too visible under a really white dress shirt, unless you keep the jacket and tie on. It is fine beneath a colored shirt or one with a heavy pattern. For most summer outfits, it is the perfect base layer.

J
James R.
Height: 5'9"
Weight: 170
Size Purchased: S, M
Great quality, weird design

Wool & Prince use fabric that feels great and holds up well.

I ordered these undershirts thinking that they were going to be more or less t-shirts. They're not. The neckline goes down to mid-chest and the shirt goes down to mid-thigh, making it more of a tunic.

I initially ordered a M (my typical size), then sized down to a S thinking that would fix the problem. It didn't. The description says "Our undershirt has two critical improvements: a long, snug torso for best-in-class stays-tucked-in fit and a wider/longer v-neck opening to hide the undershirt from peeking out." and _they mean it_.

Oh no, we're so sorry that the new fit of the undershirt isn't working for you! We'll be glad to take this feedback for improvement and are hopeful that you'll stick with us.

S
Susette D.
Height: 5'7"
Weight: 180
Size Purchased: M
Cozy T-shirts

I am a convert to merino wool T-shirts. These shirts are very thin and fine and yet very cozy and warm. I wear one shirt for an entire week. Never smells like my armpits!

Overall length quite long, for a short man like me, a bit too long, but this garment was designed to fit a range of heights. Also a bit tight over my barrel shaped body.

This brand is the best I have purchased of the three brands I have bought and wear.

M
Matthew

Super soft and comfortable to wear