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Organic Cotton Boys' Boxer Briefs Multi-pack | 5 colors
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Organic Cotton Boys' Boxer Briefs Multi-pack | 5 colors

$40.00
$40.00
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Shipping calculated at checkout.
Size
Size guide
  • GOTS Certified Organic Cotton
  • Free from BPA, formaldehyde, lead
  • Sensory-friendly tagless design
  • Free returns & easy exchanges

COMPOSITION

  • 100% GOTS certified organic ribbed cotton.
  • AZO-free water-based dyes.
  • Flat seams.

DESCRIPTION

Cloud-soft, breathable, and gentle on sensitive skin — our flat seamed boxer briefs are made from 100% organic cotton ribbed cotton. The waist band is covered and wide enough to comfortably sit on the skin without any digging in. General guidance from our reviewers is to size up if between sizes.

FEATURES

Flat seams. Hypoallergenic and made from 100% organic cotton. Dyed with GOTS-certified, water-based dyes—free from AZO toxins.

CLOTHING CARE

Machine wash cold. Tumble dry low.

SHIPPING AND DELIVERY

  • Shipping & Fulfillment Options: Please select your preferred shipping method at checkout. Standard rates apply for domestic and international orders.
  • For In Stock Items Only (Same-Day Shipping): If order is placed before 1PM EST we endeavor to ship the same day.
  • Free Manhattan Pick-Up: Available from our Upper West Side location. For in-stock orders placed before 1PM EST - select at checkout; we'll email to arrange pickup.
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Organic Cotton Boys' Boxer Briefs Multi-pack | 5 colors
Size
Size guide
ADD TO CART
Size Height Chest Waist Hip Inner leg
2Y-3Y 38.5-41 inches 21.5 inches 20.5 inches 22 inches 16.1 inches
3Y-4Y 41-43 inches 22.4 inches 21.3 inches 23 inches 18 inches
4Y-5Y 43-45.5 inches 23.2 inches 22 inches 24 inches 19.3 inches
5Y-6Y 45.5-48 inches 24 inches 22.8 inches 25 inches 20.4 inches
6Y-7Y 48-50 inches 25.1 inches 23.4 inches 26 inches 22 inches
7Y-8Y 50-53 inches 26.4 inches 24 inches 26.5 inches 22.8 inches
8Y-9Y 53-55 inches 27.6 inches 24.6 inches 27 inches 24 inches
9Y-10Y 55-57.5 inches 28.7 inches 25.2 inches 28.5 inches 25.3 inches
This size chart is a starting point, and every child fits a little differently. For more help with measurements and finding the best underwear size, please visit our Size Guide
Age Size Head Measurement (inches)
2Y-3Y S 20.5
3Y-4Y
4Y-5Y M 22
5Y-6Y
6Y-7Y
7Y-8Y L 23.5
8Y-9Y
9Y-10Y
This size chart is a starting point, and every child fits a little differently. For more help with measurements and finding the best underwear size, please visit our Size Guide
Size Height (Inches) Weight (lbs)
Newborn 17.5 - 20 5.5 - 8 
0-3 months 21 - 24.5 8.5 - 14.5
3-6 months 25 - 27 15 - 18
6-12 months 27.5 - 30 18.5 - 21
12-18 months 31 - 33 21.5 - 24
18-24 months 33 - 35 24.5 - 27
This size chart is a starting point, and every child fits a little differently. For more help with measurements and finding the best underwear size, please visit our Size Guide
Size Height (inches) Chest (inches) Waist (inches) Hip (inches)
2-3 years 35–39.5 20.75 21.25 21.5
3-4 years 40–42 22 22 23
4-5 years 43–45 23 22.5 24
6 years 45.5–49 24 23 25
7 years 50–51 25 23.5 26.5
8 years 52–54 26 24.5 27.5
9 years 54.5–56 27 25–25.5 28.5
This size chart is a starting point, and every child fits a little differently. For more help with measurements and finding the best underwear size, please visit our Size Guide
US Shoe Size Typical Age Range Category
0-2 0-6 months Baby
3-4.5 6-12 months Baby/ Early Walker
5-7.5 1-2 years Baby/ Early Walker
8-9.5 2-4 years Toddler
10-12.5 4-7 years Toddler/ Little Kid
13-3 7-10 years Big Kid
This size chart is a starting point, and every child fits a little differently. For more help with measurements and finding the best underwear size, please visit our Size Guide
BRALETTE
Kids Size 7–8 yrs 9–10 yrs 11–12 yrs
1/2 Chest 30 32 34
1/2 Bottom Opening 28 30 32
Front Length 14 15.5 17
Back Length 11 12.5 14
Total Strap Length 20 20.5 21
Distance Between Back Straps 11 11.5 12
BRIEF
Kids Size 7–8 yrs 9–10 yrs 11–12 yrs
Waistband (stretched) 25.26 27.26 29.26
1/2 Hip 30 32 34
Front Rise 13.5 14.5 15.5
Back Rise 15 16 17
Side Length 9 9.5 10.5
Leg Opening 39.33 41.02 41.83

This size chart is a starting point, and every child fits a little differently. For more help with measurements and finding the best underwear size, please visit our Size Guide

Kids Size Height (in) Weight (lbs) Waist (in)
2–3 yrs 33-36 15.7-18.1 15.7-18.1
3–4 yrs 36–39 31–36 16.5-18.9
4–5 yrs 39-42 36–41 17.3-19.7
6 42–45 41–47 18.1-20.5
7 45–48 47–53 18.9-21.3
8 48–51 53–59 19.7-22.1
9 51–54 59–65 20.5-22.9
10 54–57 65–71 21.3-23.7
11 57–60 71–77 22.1-24.5
12 60–63 77–83 22.9-25.3
13 63–66 83–89 23.7-26.1
14 66–69 89–95 24.5-26.9

This size chart is a starting point, and every child fits a little differently. For more help with measurements and finding the best underwear size, please visit our Size Guide

What Makes Treehouse Different

At Treehouse, we’re not raising the standard, we’re rewriting it.

  • GOTS Certified Organic Cotton
  • Fair-labor audited
  • Flat seams
  • Tagless design
  • Nickel-free snaps
  • Compostable packaging

OTHERS

  • Synthetic blends
  • No audit
  • Scratchy seams
  • Irritating tags
  • Standard metal snaps
  • Plastic packaging
Character
  • 5 stars: 18 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
J
Jennifer Mazzitelli

So soft and comfortable. My son loves them.

Thank you for sharing you feedback! I am very pleased he likes these!

A
Anastasia Miner

These are wonderful! The material is so soft and none of the stitching rubs up against the skin which is amazing. First pair of underwear we found that doesn’t cause a rash, doesn’t dig in, is true to to size, and my toddler can get them on and off!

This is the best feedback to read. I am so very glad your kiddo likes these!!

A
Ali

Amazing quality, soft, thick, and comfy. Worth the extra penny for quality and safety and love that it’s a small business.

E
Elizabeth

Very happy with quality

E
Elizabeth

Very happy with quality

A
A W.
Comfy and cute boys undies!

My 3 boys are loving their new cotton boxer briefs. We recently switched from mixed materials to 100% cotton and these have really sweet designs and are, most importantly, very very comfortable. They are very happy with them, therefore I am a very happy mom!

T
Tiffany B.
Great deal

These are so cute and super soft. My sons loves them and I have peace of mind knowing they are organic Cotton protecting his fertility

Thank you for sharing your feedback. I so agree. I hope more parents realise we cannot continue to dress our kids and their most sensitive skin in chemically laden plastic fabrics!

H
Hanna
Buttery soft

We love these. Hoping to see more color options for sizes up. :) One complaint my kid has that he doesn’t love is the seam in the middle on his bootie. He prefers a smooth one piece back. But other than that these are truly perfect.

Thank you so much for the kind words: we’re so glad your family loves them! :green_heart:

And thank you for mentioning the seam. Because of how underwear is constructed, there does need to be a seam at the center back, but we work hard to make sure it’s as soft and unobtrusive as possible so it doesn’t bother sensitive kids. Feedback like this is really helpful for us as we continue refining the design.

Also great timing on the color request , over the next couple of months we’ll actually be releasing more prints, colors, and expanded sizes, so stay tuned!

Thank you again for taking the time to leave such thoughtful feedback. It really helps us keep improving Treehouse.

L
Louise
We love these

They're soft, well made, high quality fabric, comfortable, cute, and my son loves them. What more could you ask for

A
Anna J.
Great fit, and so soft.

Great fit, and so soft.

So happy to hear that you found these to fit well and be so soft! We are getting new prints very soon - stay tuned!!

S
Sally T.
Buy them

We’ve had these a few months now. Wash well and the preferred underwear for my kids.

B
Becca
Fun underwear and great customer service!

My son was so excited at these fun undies when they arrived! And I feel good about how they’re made compared to his other big-box-store underwear. Plus, when my package got delayed with USPS, Anastasia personally reached out to make sure I was aware, and she was always prompt to correspond while I was checking in with USPS to figure it out. Great experience all around!

Thank you so much for your feedback! So glad you liked these and thank you for your kind words re: our customers service!

J
Jessie S.
Mom and kid approved!

My son loves these. He enjoys the prints (space cats is his favorite!) and they are comfortable and hold shape well throughout the day. They are a nice weight and very soft with no rough seams or tags. I found them to run slightly small.

So excited to hear this! We hope they serve you for a long time to come.

M
Meg R.
A hit!

super soft and comfy! well made! cute prints. I thought the sizing ran a bit small so order up.

Thanks so much for your feedback and guidance on the sizing!

M
Moriyah

So soft and comfy and lovely patterns. My kiddo loves them. Perfect fit, too.

M
Moriyah

So soft and comfy and lovely patterns. My kiddo loves them. Perfect fit, too.

M
Melissa L.
Boys boxer briefs

They were soft and cute!

S
Sally
Super soft

‘Very soft’ says my 4 year old. They feel luxurious, really different patterns (dino being the fav) and true to size.

Thank you so much for leaving a review. Your 4 year old is clearly an expert and we happen to agree! So happy the dinos have been a fit and as always if he has any feedback on future desired prints, please do let us know!

Cost per wear

Slow fashion isn’t just KINDER to THE PLANET: it’s KINDER ON your wallet, too!

Check out the cost breakdown of what you’ll pay for this item every time your child wears it. We did the math for you (USD).

Calculating the true cost of your purchase in order to become a more conscious consumer and avoid overspending.

good-idea

ONCE A MONTH

$3.33

01 case

ONCE A WEEK

USD

02 case
good-idea

EVERYDAY

$0.77

03 case
WHERE I CAME FROM

Product’s journey

STEPS AND PROCESSES

Raw materials processing
Refining and supplying material.
Yarn processing
Spinning raw material into yarn.
Fabric processing
Processing and turning yarn into fabric.
Manufacturing
The different manufacturing steps and processes.
Tree House
Design and sale of the product.
WE CARE ABOUT PEOPLE

Fair Working Conditions

Good management practices are implemented to ensure and continuously improve the working conditions of factory workers and all employees.

Certificates

GLOBAL_ORGANIC_TEXTILE_STANDARD_LOGO
GLOBAL_ORGANIC_TEXTILE_STANDARD_LOGO_2
IN NATURE WE TRUST

Sustainable Materials

100% of the materials used in this product are certified with the body below.

Certificates

GLOBAL_ORGANIC_TEXTILE_STANDARD_LOGO