Mademark SpongeBob Sister of the Birthday Boy Party T-Shirt for Kids
Mademark SpongeBob Sister of the Birthday Boy Party T-Shirt for Kids
Find your perfect fit – all sizes are US standard unisex measurements.
📏 T-Shirt Measurements (in inches)
| Size | Chest Width | Body Length | Sleeve Length |
|---|---|---|---|
| XS | 16.5” | 27” | 8” |
| S | 18” | 28” | 8.25” |
| M | 20” | 29” | 8.5” |
| L | 22” | 30” | 9” |
| XL | 24” | 31” | 9.25” |
| 2XL | 26” | 32” | 9.5” |
| 3XL | 28” | 33” | 9.75” |
📝 How to Measure
- Chest Width: Lay your favorite tee flat. Measure 1" below armpit, across chest from seam to seam.
- Body Length: Measure from the highest point of shoulder to bottom hem.
- Sleeve Length: Measure from shoulder seam to end of sleeve.
💡 Sizing Tips
- All shirts are unisex – for a more fitted look, size down; for oversized style, size up.
- If you’re between two sizes, we recommend choosing the larger one for comfort.
- Our tees are pre-shrunk but may shrink up to 5% after first wash.
Couldn't load pickup availability
Product Detail
Product Detail
Our tees are crafted with premium 100% cotton (180–200gsm), designed to be soft, breathable, and durable.
Every print is created using eco-friendly, high-definition inks that stay vibrant wash after wash.
- Unisex fit (true to US size)
- Pre-shrunk for minimal shrinkage
- Ethically produced & shipped worldwide
🎉 **Celebrate in Style with the Mademark x SpongeBob SquarePants - SpongeBob Sister of the Birthday Boy Theme Party T-Shirt!** 🎉
Get ready to party with your favorite characters from Bikini Bottom! This delightful t-shirt is a must-have for any SpongeBob fan celebrating a birthday. Made from soft, breathable fabric, this shirt ensures comfort while you enjoy all the festivities.
#### 🌟 **Why You'll Love It:**
- **Fun Design:** Featuring an eye-catching and playful graphic of SpongeBob, this t-shirt is perfect for the "Sister of the Birthday Boy"! The vibrant colors and playful font make it a standout piece for any birthday celebration.
- **High-Quality Material:** Crafted from premium cotton blend, this shirt is both soft to the touch and durable enough for all-day wear. Ideal for both indoor and outdoor parties!
- **Versatile Wear:** Whether you’re dressing up for a themed party or just want to show off your love for SpongeBob, this t-shirt pairs well with jeans, shorts, or skirts. Dress it up or down for any occasion!
- **Perfect Gift:** Looking for a gift for a SpongeBob-loving sibling? This t-shirt is a fantastic choice for birthdays, holidays, or just because!
- **Available in Various Sizes:** Choose the perfect fit for girls of all ages to make everyone feel special on the big day!
#### 👕 **Product Details:**
- **Material:** Soft Cotton Blend
- **Color:** Bright Yellow with Multicolor Graphics
- **Style:** Short Sleeve, Round Neck
Make your next birthday celebration unforgettable! Grab the Mademark x SpongeBob SquarePants T-Shirt today and let the festivities begin! 🥳
How to wear & care
How to wear & care
Perfect for daily wear, streetwear outfits, parties, or casual hangouts.
Pair it with jeans, shorts, or layer it with a jacket for an effortless look.
To keep your tee looking fresh:
- Machine wash cold, inside-out
- Use mild detergent (no bleach)
- Tumble dry low or hang dry
- Do not iron directly on the print
Materials & Craftsmanship
Materials & Craftsmanship
Fabric: 100% ring-spun cotton (soft-touch, breathable, durable)
Print: DTG eco-friendly inks (non-toxic, safe for skin, long-lasting colors)
Fit: Unisex, US standard sizing (check our [Size Guide])
Origin: Designed in-house by Bacoza, produced with trusted partners to ensure quality
Guarantee: 30-day return policy + responsive customer support
Premium Comfort
Soft cotton tees you’ll want to wear every day.
Meaningful Designs
From pets to art to humor, find a tee that tells your story.
Perfect for Gifting
Thoughtful, unique, and sure to bring a smile.
Trusted Worldwide
Thousands of orders shipped with care.
Questions check here
What material are the tees made from?
What material are the tees made from?
→ Our tees are printed on authentic Gildan blanks (5000 & 6400) — soft, durable cotton with eco-friendly inks that keep colors vibrant.
How do I find my right size?
How do I find my right size?
All shirts follow US unisex sizing. For a tighter fit, size down; for an oversized look, size up. See our [Size Guide] for details.
How long does shipping take?
How long does shipping take?
→ US orders usually arrive in 4–7 business days. International orders take 7–14 business days depending on location.
Do you ship internationally?
Do you ship internationally?
→ Yes, we ship worldwide. A tracking link is always provided so you can follow your order.
What if my shirt doesn’t fit?
What if my shirt doesn’t fit?
→ You can exchange unworn items within 30 days. Just contact our support team and we’ll take care of it.
What payment methods do you accept?
What payment methods do you accept?
→ We accept all major cards, PayPal, Stripe, Apple Pay, and Google Pay.