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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. New items added to Retiring.
Undershirt 100%

Undershirt 100%

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 49 reviews
76%
(37)
6%
(3)
14%
(7)
2%
(1)
2%
(1)
L
Leslie G.
Height: The wearer is 6'4"
Weight: The wearer is 175 lbs.
Size Purchased: L
warm, yet silky, soft merino wool men's undershirts

I just received my second three pack order for my tall, thin husband who needs to keep his core warm to be comfortable.. He wears them from early fall to late spring and loves the warm, yet silky, merino wool. The v-neck is perfectly cut not to show under a button-down shirt . The undershirts wash beautifully in my washing machine with warm water setting. I partially dry them on medium heat in the dryer and then lay them on a flat surface to block them while still damp. Like nearly all men's undershirts I have washed over the years, the seam at the bottom right of the shirt twists a little after washing. By blocking the shirts in order to square up the seams, the shirts dry perfectly flat and fold to look like they just came out of the original packaging. (BTW, I put my partially dry linen sheets on the bed and smooth them our as well and they look ironed once dry.) Definitely worth the price and the minimal extra effort to block.

N
Nicolas K.
Height: 6'
Weight: 165
Size Purchased: M
Too Large

I wear medium everything, but this is too long and tight.

We're sorry to hear this didn't fit you well. Our team is always here to help via help@woolandprince.com if you ever need help exchanging for other sizes or styles!

A
Austin R.
Height: 5’9”
Weight: 170
Size Purchased: M
Undershirt

So far so good. Be aware the V neck is a DEEP and WIDE V. But the fabric feel, weight,, color, and length as well as fit are near perfect for an undershirt. I plan on wearing it more as winter approaches. As everyone has said, the sleeves are a bit too long, but i wear it with long sleeve shirts so it hasn’t been a bother for me.

J
J.B.
Height: 5'6"
Weight: 148
Size Purchased: S
Was hopeful, but a clear miss

I was very hopeful about this undershirt. I like the cream color and fabric is super soft. It is particularly thin. I have darker chest hair and you can definitely see that through the shirt, unlike my other cotton undershirts. The v-neck design is good, clearly 'no peeking' as they have designed it to be broader and lower than most v-necks. However, peeking from the sleeves is just as annoying. The sleeves are a half to full inch longer than my other brand marino t-shirt. For some short sleeve 2nd layer shirts these undershirt can tend to peek out the sleeves.
I ordered a small based on the reviews and it's likely my best fit. It was uncomfortably snug around the middle and bottom (see below about tuck in) yet the sleeves and chest were loose and comfortable. Never felt like I had a 'beer belly' until I tried on this shirt. YMMV
The description did say that it "stays tucked in" but the length and snug fit on this was over designed. For my build, there was way too much length to the degree I was thinking about how much fabric was in my shorts/jeans. Thankfully it's a thin fabric else it would likely bunch up.
At this price point I'm looking for an "out of the park" design. Ready to pay it but this was a clear miss. And as for "so comfortable you might sleep in it", not a chance given the above. It would be a night gown at best. Not flattering. My 3-pack is headed back (at a $6 fee - so keep that in mind if you still try these out).

J
J.K.
Height: 6'0"
Weight: 190
Size Purchased: L
The Best 100% Merino Wool V-Neck Undershirts I've Found

I bought the 3-pack of the Wool & Prince (W&P) undershirts. I'm very satisfied with them and definitely recommend them. The fabric is soft and luxurious against the skin - the knit fabric thickness seems similar to my cotton undershirts, but these are preferable for sure - they are warmer, softer, and just more comfortable to wear than cotton undershirts.

Observations: The length is much longer than standard cotton undershirts - I have an average length torso and the hem on these undershirts goes to the very bottom of my rear end. (The length down the center of the back from the top of the collar to the bottom hem of the shirt is 32".) The "natural white" color is definitely more of a cream color - it looks like a very, very pale yellow when I lay it next to my bleached white cotton undershirts. Because it has a generously-sized v-neck, it does not show when I wear it with my button down oxford style dress shirts and keep the top two buttons undone - so kudos to the designers at W&P for getting that detail right.

Like the title of this review states, these are the best 100% merino wool v-neck undershirts that I have found. The only other source that I've found is Joe Merino (JM)- based in The Netherlands. I tried their offering and I prefer the W&P undershirts. I am not affiliated with either brand, and I offer you the following unbiased comparison:

Fabric Weight: W&P uses 150 gsm; JM uses 210 gsm. (Current offering) I prefer the W&P for year-round wear.

Fit: W&P is a relaxed fit; JM is a tighter "fitted" fit, even the JM XL is tighter than the W&P offering. W&P gets my vote.

Length: W&P size L is 32" long; JM size XL is 32" long (both are too long in my opinion)

Shape & Size of V-neck: W&P is a well-formed V sized correctly; JM is more of a U than a V, and it's even larger. Neither shows under an unbuttoned shirt. W&P wins again.

Color: W&P is a very, very pale yellow or "cream" color; Side by side, the JM is noticeably closer to white than the W&P. My preference for color goes to JM.

I think there's room for improvement with the W&P offering, and that's why I didn't give it 5 stars. 1. The color can be improved to make it nearer to white than it is. 2. The length can be shortened to make it the traditional length of most cotton undershirts. (I recommend shortening the size L to 28".)

With all that said, they're still the best offering out there right now, and I'll be buying more W&P undershirts when I need them. They are a luxury item for everyday wear. They're much more comfortable and more resistant to stink than cotton undershirts. I certainly hope W&P keeps making them for years to come!

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