-20%
Mom and kid wearing the ONE bamboo sun shirt in pink
pink one bamboo sun protection shirt
Woman wearing pink bamboo sun shirt UPF ONE shirt and base layer
a girl wearing the sun protecting pink bamboo sun shirt and base layer
Folded view of dusty pink Bamboo ONE Shirt V2 – soft moms and kids sun shirt for outdoor play
toddler girl wearing the one bamboo pink base layer and sun shirt
Mom + Mini Bundle | PINK Play Outside
-20%
Mom and kid wearing the ONE bamboo sun shirt in pink
pink one bamboo sun protection shirt
Woman wearing pink bamboo sun shirt UPF ONE shirt and base layer
a girl wearing the sun protecting pink bamboo sun shirt and base layer
Folded view of dusty pink Bamboo ONE Shirt V2 – soft moms and kids sun shirt for outdoor play
toddler girl wearing the one bamboo pink base layer and sun shirt
Mom + Mini Bundle | PINK Play Outside

Mom + Mini ONE Shirt Bundle – Pink | UPF 50 Bamboo | Save 20%

Sale price

$102.00

Regular price $82.00

Selling fast  - 9 left

14 Day Hassle-Free Returns
Free shipping on orders $75+
UPF 50 · sustainable · Year-Round Wear · OEKO-TEX Certified
Key Features
Sizing
Sustainability
FAQ

Kid's Size Guide

Find your perfect fit using our size chart below

Size Chest (in) Length (in) Sleeves (in)
0 - 12 Months 11.0 13.4 11.8
T1/T2 11.8 15.7 13.8
T3/T4 13.4 17.3 16.5
T5/T6 14.6 18.5 17.7
YS (7 -8 year old) 15.7 20.5 18.9
YM (9 -10 year old) 16.5 21.6 20.4

All measurements are in inches. Chest measurement is taken flat from one under arm to the other. For round measurement simply double it.

Women's Size Guide

Find your perfect fit using our size chart below

Size Chest (in) Length (in) Sleeves (in)
YL / Women XS 17.3 22.8 22.5
S 18.1 24 22.8
M 19.5 25.2 23.6
L 20.5 26 24
XL 22 26.8 24.4

All measurements are in inches. Chest is taken from one under arm to the other, for round measurement, simply double it.

A QUICK SNAPSHOT

Mom + Mini ONE Shirt

IN A NUTSHELL

UPF 50+

Wearable breathable sun protection without the re-application

Unmatched Softness

Either the softest shirt you own, or we will take it back.

Works all year

Use it as a base layer under insulation for a breathable and super soft skin sensitive friendly base layer.

Materials and standards

UPF 50+Bamboo ViscoseOEKO TEX CertifiedSkin Sensitive Friendly

A quick weather guide

Find the conditions this shirt is made for

Temperature range

30–85°F / 0–29°C

Climate

Dry and humid

Best conditions
☀ Sun☂ Rain☁ Cloudy

For extreme weather, use gear made for it. Below freezing, add a warm wool base layer. Above 90°F and high humidity, switch to an ultralight sun shirt or a tank top.

Great for

  • Sunny walks, hikes and park days
  • Travel, camping and packing light
  • Outdoor sports like climbing, biking and skiing

Not so great for

  • Swimming (it is not a rashguard)
  • Replacing sunscreen on uncovered skin
  • Heavy insulation or rain protection
  • 5 stars: 50 (98%)
  • 4 stars: 0 (0%)
  • 3 stars: 1 (2%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
Some of the reviews shown are from related products the merchant grouped with this one.
Y
Yulys Combs
Calidad y suavidad.

Tela suave al tacto, talla real, perfecto para cualquier estación del año. Si tu hijo es súper sensible a la ropa y texturas entonces este base layer es perfecto para ti. Es un color sólido y se mantiene con el lavado.

Y
Yulys Combs
Textura suave

Textura suave, perfecto para cualquier temporada. Se siente agradable en la piel y lo más importante te protege de los agentes externos.

S
Sophia
The softest sun shirt!

I absolutely LOVE this sun shirt. It’s so comfy, beyond soft, and protects me from getting sun burnt on all of my adventures. From hiking to a regular beach day it’s my go to :)

E
Emma Smith
Grey product

First, I want to say how soft this fabric is! I love it. I’m 5’7 150 lbs and I got a large and it fits great. I decided to go a little bigger so I could fit it over a t shirt while hiking. I have found it to be great for any outside activity, hiking, water play, or just playing outside.

R
Rachel
My Kid is Obsessed!

My little girl always asks to wear her "mountain shirt" - because of the little logo on the front! She loves this shirt so much and wears it all the time. And I love that when she gets it dirty, it's so easy to get clean!

R
Rachel
Soft, Beautiful, and Functional!

I *love* this shirts! It's so soft and comfortable, I find myself wearing it all the time - at home lounging around, as a base layer in frigid temps, and when it's hot outside for sun protection! I've been impressed with it's ability to repel odors (almost as good as wool) which means I can wear it multiple days in a row, even if I've sweat in it. It's a truly remarkable shirt made by a great company. Thank you!

F
Fabiana
A must-have for a beach vacation with kids

I really loved this sun shirt. The fabric is super soft and comfortable (my 2-year-old liked wearing it, which is always a win). I also felt great having extra sun protection for my 3-month-old baby, who doesn’t wear sunscreen yet. I bought a size 1T for her since they don’t offer a 3M size, and it still worked really well. It dries very fast, which is perfect for the beach. I really hope they add smaller sizes soon!

R
Restlesscrusade
We live in these!

The ONE Bamboo Adventure Shirts are unbelievably comfortable, regulate temperature naturally, and pack down tiny, which matters when you’re living out of a backpack with kids.

We wear them hiking, traveling, layering in the mountains, and even at the beach. One shirt that actually works across climates and seasons feels rare, but this one delivers.
Our kids love them just as much as we do, and that says everything.

J
JB
INCREDIBLE SUN SHIRT

This bamboo sun shirt is amazing!! It is incredibly soft and the quality is great! It has thumb holes which helps keep it on your kiddos arms and a hood to protect their head/neck and face from the sun!! I need one in my size! I also love the bright color because it is easier to spot your kiddos in the wild! We are obsessed and it is totally worth it to keep your kids skin healthy!

K
Kellyn
Perfect for Outdoor Adventures!

We absolutely love The One Shirt by Playoutside.co! My daughter owns two, and they’ve quickly become our go-to choice for all types of outdoor adventuring. The fabric is incredibly soft and comfortable, making it perfect for long hikes, beach days, and just playing outside in general.

I even picked up one for myself this time, and it’s just as fantastic. It’s breathable, easy to move in, and holds up wonderfully during active outdoor activities. The versatility of this shirt makes it a staple in our outdoor wardrobe. Highly recommend for anyone who loves to stay active and comfortable outdoors!

A
Ashley
Perfect for outdoor adventures!

This shirt takes away one less worry for me when it comes to getting my kiddos outside. The material is buttery soft (can’t wait for mom sizes!). My sensory sensitive daughter loves it which is also so helpful for me. It’s loose fitting & not tight which is what my kids like. We love them!

D
Devan
Summer staple

My two toddlers are in LOVE with these ultra-soft, super FUN tops! I can already tell they will be a summer staple for all our adventures. Ready for mom’s version too ;)

N
Nikki
Perfect for My Adventure-Loving 8-Year-Old!

The One Shirt in Terracotta is a total win for my active son! It’s soft, durable, and holds up beautifully to outdoor adventures—whether he’s climbing, running, or exploring. The breathable fabric keeps him comfortable all day, and the terracotta color is a stylish bonus that pairs with everything.

It washes up like a dream and still looks brand new after plenty of wear. This shirt is our go-to for every outing. Highly recommend for any kid who loves to play hard!

K
Kellyn
"The Perfect Toddler Shirt—Soft, Thoughtful, and So Well-Made!"

"The One" shirt truly lives up to its name! This is hands-down a favorite piece of clothing for my toddler. The design is so thoughtfully created—my little one is obsessed with the thumb holes, which not only keep the sleeves in place but also make them feel like a mini mama!

The fabric is unbelievably soft—so cozy and gentle on sensitive skin. It’s versatile enough for active play or cozy downtime, and the fit is just right—not too snug, not too loose. You can tell quality was a top priority with every detail.

Muddy + Mind has outdone themselves with this one. If you’re on the fence, don’t hesitate—this shirt is a game-changer!

s
sauntermama
My Son's Favorite Hoodie

If he could wear it every day he would. My kiddo doesn't do hats, is a bit sensory sensitive, and is pretty hard on his clothes. The ONE shirt is perfect for all of his needs. Soft and silky enough to pull on by himself with no frustration. Comfy enough to wear all day and even as pjs sometimes. Light enough to later under his favorite fleece and jacket. And he loves the thumb holes. The only thing that could make this shirt better in our eyes is if it came in his favorite color, bright blue, and if this mama could get one too!

G
Glo
Base layer obsessed

I loves these shirts for my littles!! Super soft. The thumb holes are a big hit. Love the colors. Love the hood option. It’s big enough that we put a baseball hat underneath and pull the hood over in hot weather for sun protection. Great base layer for fall weather.

A
Alicia Highland
We LOVE The ONE Shirt!

I absolutely LOVE our Muddy + Mind ONE Shirt. It is so comfortable, I wish I had one in my size! It washes and dries VERY well with no pilling or shrinkage. I accidentally let it get extra crunchy in my truck after a messy play date, and it came out of the wash as soft as ever! The perfect shirt for my little outdoor explorer!
Alicia H. + Theo (age 3)

M
Meghan D.
This shirt Rules!

We love this do it all shirt for my little guy! He wore it for the majority of a weekend camping trip near a Lake Michigan beach and he stayed comfortable no matter way the day threw at us!

A
A.S.
Excellent quality! Highly recommend

Excellent quality! The material is soft and breathable which makes it perfect for the South Florida heat and UV. Customer service is also wonderful. I highly recommend

L
Laura

I would not have purchased this product if I knew it was made in China.

E
Elizabeth Van Epps
My 4th ONE shirt

My 4th ONE shirt....love love love. It is cooling to the touch, so soft, and great for being outdoors.

E
Elizabeth Van Epps
Perfect

Lightweight, soft, beautiful color and good sun protection. We have bought many of these in the past year.