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

$40.00
$40.00
In stock, ready to ship
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 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' 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, individual fit preferences may vary. For best fit at time of purchase, use your current measurements.
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, individual fit preferences may vary. For best fit at time of purchase, use your current measurements.
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
Please note: these are general fit guidelines for Treehouse Essentials styles. Fit may vary depending on individual body types. If the size you select isn’t quite right, we’re happy to offer an exchange for a different size (see our Delivery & Return Policy for details).
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
Please note: these are general fit guidelines for Treehouse Essentials styles. Fit may vary depending on individual body types. If the size you select isn’t quite right, we’re happy to offer an exchange for a different size (see our Delivery & Return Policy for details).
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, individual fit preferences may vary. For best fit at time of purchase, use your current measurements.
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, individual fit preferences may vary. For best fit at time of purchase, use your current measurements.

Kids Size Approx. Age Height (in) Weight (lbs) Waist (in)
2T 2–3 yrs 33–36 26–31 15.7-18.1
3T 3–4 yrs 36–39 31–36 16.5-18.9
4T 4–5 yrs 39–42 36–41 17.3-19.7
5 5–6 yrs 42–45 41–47 18.1-20.5
6 6–7 yrs 45–48 47–53 18.9-21.3
7 7–8 yrs 48–51 53–58 19.7-22
8 8–9 yrs 51–54 58–64 20.5-22.8
10 9–10 yrs 54–57 64–72 21.3-23.6
11 10–11 yrs 57–60 72–81 22-24.4
12 11–12 yrs 60–63 81–92 22.8-25.2
13 12–13yrs 63–65 92–102 23.6-26
14 13–14yrs 65–67 102–115 24.4-26.8

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

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

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IN NATURE WE TRUST

Sustainable Materials

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

Certificates

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