Soft, breathable, and gentle on sensitive skin — our flat seamed tanks are made from 100% organic cotton.
FEATURES
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.
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.
It is so hard to find 100% cotton tank tops these days. My kid has eczema so sensitive to cotton-poly mixes when flush against their torso; so finding these for layering has been super helpful.
So very pleased to hear this feedback from an eczema parent. This was precisely my driver in starting Treehouse. Thank you for sharing your feedback!
B
Berenice M.
Comfort and versatility
I’m so impressed with these tank tops! The fabric is organic and incredibly soft, making them super comfortable for my kid to wear all day. They’re versatile enough to use as layering pieces or on their own, and they look great no matter how they’re styled. I also appreciate that they fit true to size, which makes shopping so much easier. Overall, these have quickly become a staple in my kid’s wardrobe!
So glad to hear this! We also recommend mixing and matching these with the PJ bottoms!
C
Charity S.
The cutest prints on the softest fabric!
So soft, so comfy! My little lives in hers! I do suggest sizing down for a regular snug fit. We purchased the size for her age and it is slightly oversized but it’s for bedtime so it still works for us! It only means she will get to wear it longer!
Thank you so much for your feedback! And great guidance on the sizing!!!
S
Sarai
Girls Briefs 5 Pack and Tank 2 Pack
I purchased the Girls Briefs 5 pack and Tank 2 pack for my daughters and couldn’t be more pleased. Upon opening I immediately noticed the silky soft touch of the organic cotton which I have not found in any of the most known brands today for children’s organic cotton clothing. The soft hue prints and colors tones are inviting and make getting dressed fun! The pattern cut of the briefs provides appropriate coverage. All the items run true to size with allowing room to grow. The flat seams are perfected and make the clothing sensory friendly. No more complaints from my children mentioning that the items are “too tight” or “too itchy” but now instead I am hearing “these are the comfiest undies!” and “These tank tops are so soft, Mama!” Also, a huge win when speaking of how the items washed as they kept their shape and softness! If you haven’t found the essentials that truly work for your child then I highly recommend trying Treehouse! We couldn’t be more thankful for their GOTS certified organic collections so carefully thought out and ethically crafted!
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.
ONCE A MONTH
$2.17
01case
ONCE A WEEK
USD
02case
EVERYDAY
$0.50
03case
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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
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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