Mushroom Baby Romper
BFFs shelter each other, rain or shine.
Our BFF-inspired foodie romper is all about healthy friendship. This adorable food-themed romper features a 3D puffy mushroom pocket with a little mushroom by its side—are they best friends or mum and baby? That’s for your little one to decide! The interactive design encourages tiny hands to play, touch, and discover.
Crafted from premium milky cotton, it’s cooling, ultra-soft, breathable, and gentle on delicate skin—perfect for all-day comfort. Snap buttons at the shoulder and crotch make dressing and diaper changes a breeze.
Available in sizes 0 to 24 months, making it a must-have for twinning, playdates, and sibling bonding. Just like best friends, some things are meant to match!
| Size reference: | |||
| Size | Length | Shoulder | Chest |
| 60 (0-6M) | 42cm | 23cm | 28cm |
| 70 (6-12M) | 45cm | 24cm | 30cm |
| 80 (12-24M) | 48cm | 25cm | 32cm |
| *All dimensions are measured lying flat. | |||
Size Guide
| mimi mono Size | Age | Height (cm) | Weight (kg) | EUR Size | US Size |
| 60 | 0-6 months | 50-60 | 4-7 | Newborn–3M | Newborn–3M |
| 70 | 6-12 months | 60-70 | 7-9 | 3-6M | 3-6M |
| 80 | 12-18 months | 70-80 | 9-11 | 6-12M | 6-12M |
| 90 | 18-24 months | 80-90 | 11-13 | 12-18M | 12-18M |
| 100 | 2-3 years | 90-100 | 13-15 | 2-3Y | 2T-3T |
| 110 | 4-5 years | 100-110 | 15-18 | 4-5Y | 4T-5T |
| 120 | 6-7 years | 110-120 | 18-20 | 6-7Y | 6-7 |
| 130 | 7-8 years | 120-130 | 20-25 | 7-8Y | 7-8 |
| 140 | 9-10 years | 130-140 | 25-35 | 9-10Y | 10 |
| 150 | 10-12 years | 140-150 | 35-45 | 11-13Y | 12-14 |
| 160 | 12 years - Adult (Unisex) | 150-160 | 45-55 | Teen/XS | US 0-2 |
| S | Adult (Unisex) | - | - | EUR 32-34 | US 4-6 |
| M | Adult (Unisex) | - | - | EUR 36-38 | US 8-10 |
| L | Adult (Unisex) | - | - | EUR 40-42 | US 10-12 |
Shipping Rates
👋 We ship worldwide!
[IMPORTANT NOTE: Import taxes and customs fees are not included in the final payment for all orders outside of Japan.]
Shipping rates within Japan
A flat shipping fee of ¥500 will be applied per local order.
Do you ship internationally?
Yes. Shipping costs are auto-calculated by weight and shown at checkout. Import taxes and customs fees are excluded; the delivery service company will contact you for these payments separately. Check your country’s import tax rates before ordering.
When will my purchase ship?
In-stock items typically ship out within 3-5 business days after the order is placed. Pre-orders ship once they arrive; check each pre-order product page for estimated arrival dates.
How long will my parcel take to arrive?
Delivery duration is between 3-7 business days, depending on your location.
How can I track my order?
You’ll get an email with tracking information as soon as your order ships.
Check out our exchange policy here.
Exchange & Returns
What's your exchange policy?
We accept exchanges for unworn, unwashed items within 7 days upon receiving your parcel. This applies to regular-priced items only. Customers will be liable for shipping and handling costs unless the exchange is due to manufacturing defects. Sale items, discount code orders, and accessories are non-exchangeable.
How do I request an exchange?
Contact us at contact@mimimono.com for assistance.
Do you accept refunds?
We do not accept refunds due to hygiene reasons, unless it is on a case by case basis.
We ship worldwide. Check our shipping rates here.
Choose options