Chomping Mechanical Dinosaur Costume
Get your rawr on — with a big green mechanical dinosaur costume, you build yourself! This costume crate contains everything you need to craft a spiky T. rex head, engineer a fierce felt jaw that snaps shut with the pull of a string, then add a set of matching dino claws to complete the look. Finish off your dino discovery by learning about hinges, rotary motion, and fossil detective work. Ready to dig in?
Why it’s awesome
Jaw-dropping science
Build your own hinged dino jaw that snaps shut with rotary motion.
Dino-mite design
Stomp and roar your way through trick-or-treating and outdoor imaginative play.
What’s included?

Topics explored
Hinges + motors
Felt crafts
Paleontology
Additional details
From the desk of the product designer:
Behind the design

“No dinosaur costume is complete without snapping jaws! Explore mechanics to bring this T. rex to life.”
- KiwiCo Product Designer
By the numbers
25
Number of brads used for the costume
3
Jaw pulley prototypes
Many!
Hours worn around the office
Reviews
4.5
32 reviews
Customer images

Tal
09/13/2023
Got it for my 3 year old son he loved to build it and play. I would say I had to use fabric glue for the teeth. But we made a great coustum

Amy
03/20/2023
This one was AMAZING!! So much fun to build and play with!

Anne
02/28/2023
My 4-year-old grandson loved it! He immediately started to make it, with the help of his Dad. They love to do that. They made it in time for him to wear at his birthday party! He's very good at putting things together.

Daigle
10/25/2022
It is an adorable mask. The chomping mouth was a little difficult to work. It was hard to adjust the screws to get it to chomp like in the video. In the end, it was OK because he just left it open.

Courtney
10/19/2022
It was a fun project and looks cool! The mouth doesn’t drop open easily tho so can’t really chomp as easily as you’d like.

Cynthia K
10/03/2022
The chomping jaw is very fun, & my grandson LOVED the process of making it & is excited about the finished product!
Added