• Under the Sea Birthday Backdrop Set - display 1
  • Under the Sea Birthday Backdrop Set - display 2
  • Under the Sea Birthday Backdrop Set - display 3
  • Under the Sea Birthday Backdrop Set - display 4
  • Under the Sea Birthday Backdrop Set - display 5
  • Under the Sea Birthday Backdrop Set - display 6
  • Under the Sea Birthday Backdrop Set - size chart
  • 4mm corrugated coroplast - waterproof, fade resistant, made in the USA
  • Choose your display - indoor standee or lawn stake
  • Quick and easy standee setup in four steps
  • How to set up your standee
1 11

Under the Sea Birthday Backdrop Set

Under the Sea Birthday Backdrop Set

$166.44 USD
$219.00 USD $166.44 USD
Sale Sold out
Backing

Type the name, age or message you want printed on your sign.

Leave it blank and we’ll print the wording shown in the photos. Personalized items are final sale, so please double-check the spelling.

Celebrate in style with this Under the Sea Birthday Backdrop Set—a stunning personalized multi-piece die-cut coroplast party display featuring adorable ocean creatures that bring underwater magic to any celebration. The custom birthday arch sign is personalized with your child's name, making it the perfect centerpiece for a birthday party, first birthday, photo backdrop, or dessert table display, while the matching sea creature cutouts complete the scene. Crafted from sturdy, weather-resistant 4mm coroplast, these party props and standees are built to shine at both indoor and outdoor events. Display them as freestanding standees or use yard stakes to create an unforgettable birthday party decor setup in your yard or venue. Every piece in this under the sea party set is proudly made to order in the USA.

Dimensions (Each Piece – Set of 3):

Personalized Arch Sign: 45"W x 60"H (scored and folded)

Octopus Cutout: 28"W x 34"H (scored and folded)

Seahorse Cutout: 18"W x 30"H

What You'll Get:

✔ Under the Sea Theme – Adorable ocean creatures bring an enchanting underwater world to your little one's birthday celebration.

✔ Complete 3-Piece Set – A personalized arch sign plus matching themed cutouts for a full party display.

✔ Weather-Resistant Coroplast – Sturdy, lightweight, and ready for indoor or outdoor use.

✔ Choose Standee or Yard Stakes – Select your display style at checkout.

✔ Made in the USA – Made to order and personalized with your custom name.

View full details

Quick facts

The essentials for planning your event, in one place.

What’s included
  • Personalized Arch Sign — 45″W × 60″H
  • Octopus Cutout — 28″W × 34″H
  • Seahorse Cutout — 18″W × 30″H
Sold as the full set or as individual pieces — see the options above.
Largest piece
45″ wide × 60″ tall
Material
4mm fluted coroplast (corrugated plastic), UV-printed
Indoor / outdoor
Indoor and outdoor (weather-resistant, fade-resistant UV print)
Stands on its own?
Yes — easel back (indoor) or lawn stakes (outdoor), chosen at checkout
Made to order
Yes — printed in our workshop in Fort Lauderdale, FL in 1–3 business days.
Shipping
Free ground shipping in the continental U.S. (3–5 business days after production). FedEx 2nd Day Air available at checkout. International shipping available. Details
Arrives
Scored and folded flat for safe shipping — unfold and it stands straight.
Personalization
Optional — add your wording in the personalization box at checkout; leave it blank to get the design exactly as pictured
Returns
14 days from delivery if ordered without personalization. Personalized pieces are final sale and can’t be returned or exchanged, so please check the spelling before ordering. Return policy

Planning around a date? Read the FAQ or text us at 954-228-4828.