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Adult Transformers Optimus Prime Converting Costume

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     Read Reviews (8)
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Item # DI119389
Items Included
  • Jumpsuit
  • Truck Cab
  • Pair of Wrist Cuffs with Attached Tires
  • Pair of Gloves
  • Pair of Boot Covers with Attached Tires
  • Mask
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Sale Price $13.99 
Size: XS
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Product Information

Size Chart
Runs Small
Slightly Small
True To Size
Slightly Large
Runs Large
Size Measurement Standard Metric
Medium Chest 38" - 40" 97cm - 102cm
Medium Inseam 30" 76cm
Size Measurement Standard Metric
X-Large Chest 42" - 46" 107cm - 117cm
X-Large Inseam 31" 79cm
Features
  • Fabric: 100% polyester; mesh: 86% polyester, 14% spandex; foam: 100% polyurethane
  • Jersey knit jumpsuit has hook and loop fastener at center back
  • All-over printed graphics
  • Foam wrist cuffs slide on, have elastic band in upper edge
  • Wrist-length gloves slide on
  • Foam boot covers have elastic band in upper edge
  • Molded plastic mask has elastic band around back of head, mesh-covered eye openings for limited vision
  • Foam truck cab has mesh-covered windshield for truck mode, head hole in top for robot mode
  • Illustrated transformation instructions are printed on item package
  • Officially licensed

Autobots, Roll Out

Every kid dreams of being Optimus Prime. Why? Well, he's the brave leader of the Autobots and he always protects the world from the dastardly Decepticons! It also doesn't hurt that he can transform into a semi-truck, which actively combines 2 things that kids love: robots and trucks. Of course, kids grow up and turn into adults and those dreams slowly float away into the back of your mind...

Until you see something like this amazing Transformers costume! This costume allows you to look just like Optimus Prime, but you can also convert it into his semi-truck form. That's enough to make you remember some of those old Autobot dreams! You can finally be the one commanding the Autobots to "Roll out!" when the Decepticons show up to cause trouble!

Product Details

This officially licensed Adult Transformers Optimus Prime Converting Costume helps you live out your childhood dream of becoming the leader of the Autobots! The costume comes with everything you need, including a shirt, a pair of pants, a mask, and a set of detachable armor. Each piece has realistic details, which include metallic and armor printing. The chest armor is shaped like a semi-truck cabin. The sleeves and pant legs both have foam tires on them for added detail. The mask is molded into the shape of Optimus Prime's face, so all you have to do is slide it on and you'll instantly look like your favorite Transformer! And the best part about this costume? With a few simple movements, you can convert the outfit into his semi-truck form.

Lead the Team

If you grew up watching Transformers cartoons and wanted nothing more than to step into the shoes of Optimus Prime, then you are ready for this Optimus Prime costume! With a realistic look and converting action, it's an easy choice for any grown-up Transformers fan!

Questions & Answers

Q: What is the maximum height of a person that will fit this costume? There is no information in the size guide or measurement description for that. Thanks in advance! (1 Answer)
Asked by Anonymous | August 1, 2026
Monster Responds...
The size chart for this costume lists chest and inseam measurements rather than a height range, so those are the best numbers to guide your fit. The Medium covers a 38 to 40 inch chest with a 30 inch inseam, and the X-Large covers a 42 to 46 inch chest with a 31 inch inseam. Comparing your own chest and inseam to those figures is the surest way to find the right size.
(AI Generated Answer)

Q: Hi guys, can this be used for a 13 year old boy, the M size? Are the adult sizes really large? (1 Answer)
Asked by Olivia | June 26, 2026
Monster Responds...
This is an adult costume, so whether the Medium works for your 13-year-old really comes down to his measurements. The Medium is sized for a 38 to 40 inch chest and a 30 inch inseam, so if he falls in that range it could work well. Comparing his chest and inseam to our size chart is the surest way to know before you order.
(AI Generated Answer)

Q: I purchased this but have no idea how the truck cab is supposed to be attached. There are two straps in the back but where do they go? (1 Answer)
Asked by brandon | September 22, 2022
Monster Responds...
They will connect to the inside front of the costume to become shoulder straps.

Reviews

4.2
     
5 Stars
75%
4 Stars
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3 Stars
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2 Stars
25%
1 Stars
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Customers Say
Most reviewers are highly positive about this product, praising its high detail and, in one case, noting that it even transforms into a semi truck as expected. The main concern among less satisfied customers is a fulfillment issue where one received their costume with a missing jumpsuit and had difficulty reaching customer service for a resolution.
(AI Generated Review Summary)
DI119389 Optimus Prime
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