Sell on Zazzle
Tap / click on image to see more RealViewsTM
Sale Price $60.48.  
Original Price $67.20 Comp. value
per board
You save 10%

ONE-der the Sea Birthday Welcome Sign

4.5 out of 5 stars rating
2691 Total Reviews |
by
Collection
Qty:
Size
15.23" x 19.52"
Corner Style
Square
+$2.50

Other designs from this category

Shop this collection

Jessica A
Tap / click on image to see more RealViewsTM
 
 
 
 
 
 
 
 

About Foam Core Poster Boards

Sold by
Foam BoardsCreate your own from scratch

Corner Style: Square

Lightweight, sturdy, and ready to make a statement. Our foam core boards are perfect for welcome signs, event displays, presentations, posters, and signature boards. The dent-resistant polystyrene surface holds up to handling, travel, and even brief outdoor use, so your design looks sharp wherever it lands.

  • 3/16" thick white foam board with polystyrene core and surface
  • Multiple standard sizes plus custom sizing (18" L x 24" W is a customer favorite for welcome signs)
  • Vivid, full-color digital printing
  • Single or double-sided print options
  • Best for indoor use; limited outdoor use
  • Easy mounting for 1-sided prints with 3M tape or adhesive poster stands

Mounting Option: None

Choose between three mounting options.

About This Design

ONE-der the Sea Birthday Welcome Sign

ONE-der the Sea Birthday Welcome Sign

Welcome guests to your little one’s magical celebration with this “ONE-der the Sea” birthday welcome sign! Featuring a sparkling aqua background with whimsical mermaid tails, jellyfish, starfish, and a playful seahorse, this sign sets the perfect tone for an under-the-sea themed party. Personalize with your child’s name and age to create a stunning custom decoration that makes your entrance unforgettable. Ideal for 1st birthdays, mermaid parties, and ocean-inspired celebrations, this welcome sign coordinates beautifully with matching party supplies for a complete “ONE-der the Sea” look.
TinyMilestonesPrint
Pro
Artwork designed by
United States
View their Store

Customer Reviews

4.5 out of 5 stars rating2.7K Total Reviews
2184 total 5-star reviews134 total 4-star reviews78 total 3-star reviews90 total 2-star reviews205 total 1-star reviews
2,691 Reviews
Reviews for similar products
5 out of 5 stars rating
By Kena K.September 2, 2025 • Verified Purchase
Foam Core Board, Size: 18.00" x 24.00", CornerStyle: Square, Mounting Option: None
Very Beautiful. Will Definitely order again in the future. Purchased 18×24 size board which was perfect. Received compliments on how beautiful it was. Special thank you to the Designer and to Zazzle 🩷.
4 out of 5 stars rating
By Michelle M.August 13, 2025 • Verified Purchase
Foam Core Board, Size: 18.00" x 24.00", CornerStyle: Square, Mounting Option: None
Overall the sign was awesome! Good quality was a little bummed that it got mashed in transport. The sign definitely has creases where the box got smashed. Had it not been squished it would have been great! .
5 out of 5 stars rating
By Aisha S.July 23, 2025 • Verified Purchase
Foam Core Board, Size: 18.00" x 24.00", CornerStyle: Square, Mounting Option: None
I absolutely loved the way this turned out. The quality was stunning!!! Super impressive. I would attribute part of this because this was a professional quality picture. .

Tags

Foam Core Poster Boards
under the sea welcome signone der the sea birthdayfirst birthday party signmermaid birthday decorationspersonalized welcome signocean theme birthday1st birthday under the seagirl birthday party décorkids birthday welcome postercustom birthday sign
All Products
under the sea welcome signone der the sea birthdayfirst birthday party signmermaid birthday decorationspersonalized welcome signocean theme birthday1st birthday under the seagirl birthday party décorkids birthday welcome postercustom birthday sign

Other Info

Product ID: 256704991817422775
Created on: 9/10/2025, 5:08 PM
Rating: G 
Related Searches
foam board welcome party signsfoam board signswelcome board design