A navy blue oversized t-shirt dress with a Mount SmileyWorld print and pockets.
A woman wears a navy blue oversized t-shirt with a repeating print of mountains, trees, and smiling suns.
A woman wears a navy blue oversized t-shirt dress with a Mount SmileyWorld print and white socks.
A woman wears a navy blue oversized sleep tee with a Mount SmileyWorld print and white fuzzy trim.
A woman and child in matching navy blue pajamas with a mountain and smiley face print.
A woman wears a navy blue oversized t-shirt dress with a Mount SmileyWorld print and pockets.
A woman wears a navy blue oversized t-shirt with a repeating print of mountains, trees, and smiley faces.
Navy blue sleep tee with a repeating Mount SmileyWorld print and green trim.
Navy blue t-shirt with a Mount SmileyWorld print and green trim.

Mega Sleep Tee - Mount SmileyWorld® - Luxe Bamboo

Sale price$57.99 USD5.0

SmileyWorld® has been spreading positivity and self-expression, inspiring generations to share happiness, confidence, and creativity through its iconic smile. This collaboration celebrates that joyful spirit with Ploom Baby’s signature comfort and effortless style, a reminder to share good energy and let your light shine.

Product Description:
Get ready to dream big. The Mount SmileyWorld Mega Sleep Tee is your new go-to for lounging, sleeping, and everything in between. Designed with an extra-relaxed, oversized fit and made from our buttery-soft Luxe Bamboo, it feels like a cloud and moves like one too. With handy pockets (yes, pockets!) and a cheerful all-over SmileyWorld print, this tee redefines cozy in the happiest way possible.

Features & Benefits:

🌙 Luxe Bamboo — silky-soft, breathable, and gentle on skin

💛 Mega oversized fit for ultimate comfort and ease

☁️ Convenient side pockets for lounging essentials

☀️ Exclusive Mount SmileyWorld® print that radiates joy and positivity

🌎 Responsibly made with love and care

Fit Guide - One Size

TM & © 1971-2025 The Smiley Company

Why You’ll Love Ploom

Softness

Tested

Breathability

Gentle

All-Day Comfort

Grow

Why You’ll Love Ploom

Softness

Perfect for sensitive skin—no irritation, all-day comfort.

Softness

A baby wearing a white footie pajama set with a teddy bear print.

Perfect for sensitive skin—no irritation, all-day comfort.

Why You’ll Love Ploom

Tested

Rigorously tested to meet safety standards. Gives parents peace of mind. Safe for babies, kids, and sensitive skin.

Tested

Rigorously tested to meet safety standards. Gives parents peace of mind. Safe for babies, kids, and sensitive skin.

Why You’ll Love Ploom

Breathability

Ultra-breathable and temperature-regulating keeping you & your little comfortable.

Breathability

Baby in a teal pajama with an otter print.

Ultra-breathable and temperature-regulating keeping you & your little comfortable.

Why You’ll Love Ploom

Gentle

Naturally hypoallergenic. Less irritation for delicate skin.

Gentle

Baby in blue Neopets blueberry pajamas with feet up.

Naturally hypoallergenic. Less irritation for delicate skin.

Why You’ll Love Ploom

All-Day Comfort

Designed for unrestricted movement and soft, breathable wear.

All-Day Comfort

A woman and baby wear matching blue Neopets blueberry pajamas.

Designed for unrestricted movement and soft, breathable wear.

Why You’ll Love Ploom

Grow

Grows with your child. Wear longer without sacrificing comfort.

Grow

Baby in blue Neopets blueberry print zip pajamas with a white bow.

Grows with your child. Wear longer without sacrificing comfort.

$1

Donated for every clothing item sold to hand picked charities

%

of every sale plants tree's and removes ocean bound plastic

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Ploom Baby is home to ultra-soft, sensory-friendly clothing made from sustainable TENCEL™ Modal & Bamboo Viscose thoughtfully designed for babies, toddlers, kids, and adults with sensitive skin, eczema, or sensory sensitivities.

Our best-selling pajamas, zip sleepers, rompers, and daywear are loved for their breathable, stretchy, and tag-free feel that keeps every body cozy from morning to night. Every piece is made to move with your family — because comfort should never slow anyone down. We’re proud to bring comfort and creativity together through our exclusive licensed collaborations with Super Simple Songs, Puffin Rock, and Neopets — collections that add colour, nostalgia, and fun to every snuggle. From matching family pajamas to sensory-friendly playwear, Ploom Baby brings softness, sustainability, and joy to every generation. And with every item sold, we donate $1 to support communities in need.