SpongeBob Birthday T-Shirt for 11 Year Olds Fun Party Apparel
SpongeBob Birthday T-Shirt for 11 Year Olds Fun Party Apparel
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.
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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
**🎉 Mademark x SpongeBob SquarePants - SpongeBob "I Am 11 Years Old" Birthday Party T-Shirt 🎂**
Celebrate your child's special day with a splash of fun and color! The Mademark x SpongeBob SquarePants "I Am 11 Years Old" Birthday Party T-Shirt is the perfect outfit for your little one's birthday celebration.
👕 **Product Features:**
- **Vibrant Design:** This eye-catching t-shirt showcases the beloved character SpongeBob SquarePants, complete with a cheerful expression and the fun tagline "I Am 11 Years Old," making it an ideal addition to any birthday party outfit.
- **Quality Material:** Made from soft, breathable fabric, this shirt ensures all-day comfort for your child, allowing them to enjoy their special day without any discomfort.
- **Perfect Fit:** Available in a range of sizes, this t-shirt is designed to provide a great fit for kids aged 11, making it a versatile choice for growing kids.
- **Versatile Style:** The bright yellow color reflects SpongeBob’s vibrant personality, making it easy to pair with shorts, jeans, or even festive party skirts for a complete birthday look.
🎈 **Why Choose This T-Shirt?**
- **Great for Party Themes:** Whether it's a SpongeBob-themed birthday bash or a casual get-together with friends, this shirt is sure to be a hit!
- **Memorable Keepsake:** Capture the fun of turning 11 with this stylish tee, perfect for photos and lasting memories.
🌟 **Care Instructions:**
- Machine washable for easy clean-up after the party, ensuring the shirt stays vibrant wash after wash!
Give your child the gift of fun and style for their birthday! This Mademark x SpongeBob SquarePants "I Am 11 Years Old" Birthday Party T-Shirt is not just clothing; it’s a celebration of joy and friendship that will make their day unforgettable. Order yours today!
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.